Finding the Fourth Proportional to 12,434.76, 17,160.66 and 8,240.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.76 : 17,160.66 = 8,240.04 : x
2. Step 2: Convert to fraction form
   12,434.76/17,160.66 = 8,240.04/x
3. Step 3: Cross multiply
   12,434.76x = 17,160.66 × 8,240.04
4. Step 4: Simplify right side
   12,434.76x = 141,404,524.83
5. Step 5: Solve for x
   x = 141,404,524.83/12,434.76
6. Step 6: Final answer
   x = 11,371.71