Raju received an inheritance from his grandfather's estate. He will be entering college in 2 years and is expecting to need $3500 $4000 $5000 $1500 respectively at the beginning of each of the four consecutive years at school. If he can get GICs with 5.25% interest, compounding annually, what principal amount would Raju need to invest from his inheritance to completely be self sufficient during these school years?​