Finding the Fourth Proportional to 28,510.78, 42,753.93 and 9,792.70

Step by Step Solution

1. Step 1: Write the proportion equation
   28,510.78 : 42,753.93 = 9,792.70 : x
2. Step 2: Convert to fraction form
   28,510.78/42,753.93 = 9,792.70/x
3. Step 3: Cross multiply
   28,510.78x = 42,753.93 × 9,792.70
4. Step 4: Simplify right side
   28,510.78x = 418,676,196.54
5. Step 5: Solve for x
   x = 418,676,196.54/28,510.78
6. Step 6: Final answer
   x = 14,684.84