Finding the Fourth Proportional to 15,411.06, 21,268.71 and 9,124.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,411.06 : 21,268.71 = 9,124.38 : x
2. Step 2: Convert to fraction form
   15,411.06/21,268.71 = 9,124.38/x
3. Step 3: Cross multiply
   15,411.06x = 21,268.71 × 9,124.38
4. Step 4: Simplify right side
   15,411.06x = 194,063,792.15
5. Step 5: Solve for x
   x = 194,063,792.15/15,411.06
6. Step 6: Final answer
   x = 12,592.50