19. Jeff Bezos
Estimated net worth: $25.2 billion
Bezos is the CEO of Amazon.com, the world's largest Internet retailer. The company reported over $61 billion in sales in 2012. It also produces the Kindle, shown here.
18. Karl Albrecht
Estimated net worth: $26 billion
93-year-old Albrecht is the Aldi sud, a giant German discount supermarket chain, Forbes reported. He is the richest man in Germany.