A $10,000 par value bond with coupons at 8%, convertible semi annually, is being sold three years and four months before the bond matures. The bond is redeemable at $C, and purchase will yield 6% convertible semi annually to the buyer. The price of the bond was $5,640 three years and six months before maturity (immediately after the coupon payment). Calculate the market price of the bond, assuming compound interest throughout.