Finding the Fourth Proportional to 20,758.80, 31,132.43 and 5,762.47

Step by Step Solution

1. Step 1: Write the proportion equation
   20,758.80 : 31,132.43 = 5,762.47 : x
2. Step 2: Convert to fraction form
   20,758.80/31,132.43 = 5,762.47/x
3. Step 3: Cross multiply
   20,758.80x = 31,132.43 × 5,762.47
4. Step 4: Simplify right side
   20,758.80x = 179,399,608.87
5. Step 5: Solve for x
   x = 179,399,608.87/20,758.80
6. Step 6: Final answer
   x = 8,642.10