Finding the Fourth Proportional to 21,290.48, 31,932.12 and 5,704.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,290.48 : 31,932.12 = 5,704.48 : x
2. Step 2: Convert to fraction form
   21,290.48/31,932.12 = 5,704.48/x
3. Step 3: Cross multiply
   21,290.48x = 31,932.12 × 5,704.48
4. Step 4: Simplify right side
   21,290.48x = 182,156,139.90
5. Step 5: Solve for x
   x = 182,156,139.90/21,290.48
6. Step 6: Final answer
   x = 8,555.76