According to Forbes magazine’s annual list of the world’s billionaires, Apple CEO Steve Jobs’ personal fortune declined to $5.4 billion from $5.7 billion as reported in last year’s list. His worldwide rank declined from 132nd to 189th.

Jobs’ wealth, though impressive, nevertheless places him behind most other well-known tech moguls, including several historic rivals: Microsoft CEO Steve Ballmer ranks 43rd with $15 billion. Michael Dell ranks 40th with $16.4 billion. Bill Gates, while still enormously wealthy with his vast $58 billion fortune, slipped from 1st to 3rd.

A number of Jobs’ friends and allies outrank him as well His old pal Larry Ellison (Oracle) ranks 14th with $25 billion. Sergey Brin and Larry Page (Google) come in at Nos. 32 and 33, with $18.7 billion and 18.6 billion respectively. Google CEO and Apple board member Eric Schmidt is 142nd with $6.6 billion.

At least Jobs walloped Yahoo CEO Jerry Yang, whose wealth measures at a relatively puny $2.3 billion.

Outside of the tech world, Jobs’ fortune fares much better. He’s richer than such notable figures as George Lucas (No. 277, $3.9 billion); Donald Trump (No. 368, $3 billion); Oprah Winfrey (No. 462, $2.5 billion); Baltimore Ravens owner Steve Bisciotti (No. 897, $1.3 billion); and former Disney CEO Michael Eisner (No. 1014, $1.1 billion).

Concerned citizens who would like to make a donation on Steve Jobs’ behalf should increase their planned purchases of Macs, iPhones and iPods this year. I’m sure His Steveness will appreciate your support.