Finding the Fourth Proportional to 11,397.77, 15,711.69 and 8,875.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,397.77 : 15,711.69 = 8,875.43 : x
2. Step 2: Convert to fraction form
   11,397.77/15,711.69 = 8,875.43/x
3. Step 3: Cross multiply
   11,397.77x = 15,711.69 × 8,875.43
4. Step 4: Simplify right side
   11,397.77x = 139,447,951.85
5. Step 5: Solve for x
   x = 139,447,951.85/11,397.77
6. Step 6: Final answer
   x = 12,234.67