Finding the Fourth Proportional to 12,695.86, 17,520.57 and 8,227.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,695.86 : 17,520.57 = 8,227.39 : x
2. Step 2: Convert to fraction form
   12,695.86/17,520.57 = 8,227.39/x
3. Step 3: Cross multiply
   12,695.86x = 17,520.57 × 8,227.39
4. Step 4: Simplify right side
   12,695.86x = 144,148,562.41
5. Step 5: Solve for x
   x = 144,148,562.41/12,695.86
6. Step 6: Final answer
   x = 11,353.98