Finding the Fourth Proportional to 12,932.64, 17,854.32 and 8,460.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,932.64 : 17,854.32 = 8,460.96 : x
2. Step 2: Convert to fraction form
   12,932.64/17,854.32 = 8,460.96/x
3. Step 3: Cross multiply
   12,932.64x = 17,854.32 × 8,460.96
4. Step 4: Simplify right side
   12,932.64x = 151,064,687.35
5. Step 5: Solve for x
   x = 151,064,687.35/12,932.64
6. Step 6: Final answer
   x = 11,680.89