Finding the Fourth Proportional to 12,650.86, 17,464.86 and 8,177.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,650.86 : 17,464.86 = 8,177.15 : x
2. Step 2: Convert to fraction form
   12,650.86/17,464.86 = 8,177.15/x
3. Step 3: Cross multiply
   12,650.86x = 17,464.86 × 8,177.15
4. Step 4: Simplify right side
   12,650.86x = 142,812,800.61
5. Step 5: Solve for x
   x = 142,812,800.61/12,650.86
6. Step 6: Final answer
   x = 11,288.78