Your 4 siblings Maya, Kadeisha, Samuel and Tesho are all 22 years old. Each of them plans on retiring in 40 years. They have already determined the amount of money they need at retirement. These amounts are shown in the table below: Maya Kadeisha Samuel Tesho Amount Needed $5,500,000 $5,500,000 $5,500,000 $5,500,000 Maya has decided to start saving for retirement immediately. She will make an annual contribution into her retirement account. The contribution will be made at the end of each year. She expects to earn 7.2% compounded annually prior to retirement. 

What is amount of her annual contribution? 

Samuel has decided to start saving for retirement immediately. He will make an annual contribution into his retirement account. The contributions will be made at the end of each year. He expects to earn 7.2% compounded annually prior to retirement. After the initial contribution Samuel plans on increasing his annual contributions by 4% each year. 

What is the amount of his initial contribution?