Finding the Fourth Proportional to 11,429.24, 17,132.17 and 3,930.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,429.24 : 17,132.17 = 3,930.55 : x
2. Step 2: Convert to fraction form
   11,429.24/17,132.17 = 3,930.55/x
3. Step 3: Cross multiply
   11,429.24x = 17,132.17 × 3,930.55
4. Step 4: Simplify right side
   11,429.24x = 67,338,877.12
5. Step 5: Solve for x
   x = 67,338,877.12/11,429.24
6. Step 6: Final answer
   x = 5,891.81