Finding the Fourth Proportional to 8,831.92, 12,178.72 and 7,414.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,831.92 : 12,178.72 = 7,414.63 : x
2. Step 2: Convert to fraction form
   8,831.92/12,178.72 = 7,414.63/x
3. Step 3: Cross multiply
   8,831.92x = 12,178.72 × 7,414.63
4. Step 4: Simplify right side
   8,831.92x = 90,300,702.67
5. Step 5: Solve for x
   x = 90,300,702.67/8,831.92
6. Step 6: Final answer
   x = 10,224.36