Finding the Fourth Proportional to 13,092.78, 18,068.16 and 7,124.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,092.78 : 18,068.16 = 7,124.52 : x
2. Step 2: Convert to fraction form
   13,092.78/18,068.16 = 7,124.52/x
3. Step 3: Cross multiply
   13,092.78x = 18,068.16 × 7,124.52
4. Step 4: Simplify right side
   13,092.78x = 128,726,967.28
5. Step 5: Solve for x
   x = 128,726,967.28/13,092.78
6. Step 6: Final answer
   x = 9,831.90