Finding the Fourth Proportional to 21,290.52, 31,932.12 and 5,704.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,290.52 : 31,932.12 = 5,704.50 : x
2. Step 2: Convert to fraction form
   21,290.52/31,932.12 = 5,704.50/x
3. Step 3: Cross multiply
   21,290.52x = 31,932.12 × 5,704.50
4. Step 4: Simplify right side
   21,290.52x = 182,156,778.54
5. Step 5: Solve for x
   x = 182,156,778.54/21,290.52
6. Step 6: Final answer
   x = 8,555.77