PLEASE HELP

Congratulations! Today your first child was born - a daughter. The second thought in your head after her birth was that now you must save for college expenses. You would like to be able to afford to send her to college by her 18th birthday. College is expected to cost $21,000;$23,000;$27,000; 29,000 for each of her four years of school respectively. You want these amounts to be available to her on her 18th-21st birthdays respectively ( $21,000 withdrawn on her 18th birthday, etc.) In addition, you want to give her a $25,000 graduation gift on her 22nd birthday so that she can get a good start on her career. You currently have $3000 to meet these obligations. You want to save an equal amount at the end of each of the next 22 years to meet the remaining obligations. How much must you save at the end of the each of the next 22 years so that you can meet these obligations? Assume your investments will earn 7.2% annually, and ignore taxes