Finding the Fourth Proportional to 3,932.88, 5,414.76 and 3,142.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.88 : 5,414.76 = 3,142.32 : x
2. Step 2: Convert to fraction form
   3,932.88/5,414.76 = 3,142.32/x
3. Step 3: Cross multiply
   3,932.88x = 5,414.76 × 3,142.32
4. Step 4: Simplify right side
   3,932.88x = 17,014,908.64
5. Step 5: Solve for x
   x = 17,014,908.64/3,932.88
6. Step 6: Final answer
   x = 4,326.32