Finding the Fourth Proportional to 12,658.32, 17,445.29 and 8,401.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.32 : 17,445.29 = 8,401.86 : x
2. Step 2: Convert to fraction form
   12,658.32/17,445.29 = 8,401.86/x
3. Step 3: Cross multiply
   12,658.32x = 17,445.29 × 8,401.86
4. Step 4: Simplify right side
   12,658.32x = 146,572,842.23
5. Step 5: Solve for x
   x = 146,572,842.23/12,658.32
6. Step 6: Final answer
   x = 11,579.17