Finding the Fourth Proportional to 13,092.69, 18,067.61 and 7,124.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,092.69 : 18,067.61 = 7,124.37 : x
2. Step 2: Convert to fraction form
   13,092.69/18,067.61 = 7,124.37/x
3. Step 3: Cross multiply
   13,092.69x = 18,067.61 × 7,124.37
4. Step 4: Simplify right side
   13,092.69x = 128,720,356.47
5. Step 5: Solve for x
   x = 128,720,356.47/13,092.69
6. Step 6: Final answer
   x = 9,831.47