Finding the Fourth Proportional to 3,900.71, 5,382.71 and 2,132.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.71 : 5,382.71 = 2,132.32 : x
2. Step 2: Convert to fraction form
   3,900.71/5,382.71 = 2,132.32/x
3. Step 3: Cross multiply
   3,900.71x = 5,382.71 × 2,132.32
4. Step 4: Simplify right side
   3,900.71x = 11,477,633.27
5. Step 5: Solve for x
   x = 11,477,633.27/3,900.71
6. Step 6: Final answer
   x = 2,942.45