Finding the Fourth Proportional to 52,748.47, 72,792.98 and 28,875.21

Step by Step Solution

1. Step 1: Write the proportion equation
   52,748.47 : 72,792.98 = 28,875.21 : x
2. Step 2: Convert to fraction form
   52,748.47/72,792.98 = 28,875.21/x
3. Step 3: Cross multiply
   52,748.47x = 72,792.98 × 28,875.21
4. Step 4: Simplify right side
   52,748.47x = 2,101,912,584.03
5. Step 5: Solve for x
   x = 2,101,912,584.03/52,748.47
6. Step 6: Final answer
   x = 39,847.84