Finding the Fourth Proportional to 28,510.28, 42,753.18 and 9,792.20

Step by Step Solution

1. Step 1: Write the proportion equation
   28,510.28 : 42,753.18 = 9,792.20 : x
2. Step 2: Convert to fraction form
   28,510.28/42,753.18 = 9,792.20/x
3. Step 3: Cross multiply
   28,510.28x = 42,753.18 × 9,792.20
4. Step 4: Simplify right side
   28,510.28x = 418,647,475.43
5. Step 5: Solve for x
   x = 418,647,475.43/28,510.28
6. Step 6: Final answer
   x = 14,684.09