Finding the Fourth Proportional to 22,752.82, 31,399.04 and 12,681.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,752.82 : 31,399.04 = 12,681.90 : x
2. Step 2: Convert to fraction form
   22,752.82/31,399.04 = 12,681.90/x
3. Step 3: Cross multiply
   22,752.82x = 31,399.04 × 12,681.90
4. Step 4: Simplify right side
   22,752.82x = 398,199,649.55
5. Step 5: Solve for x
   x = 398,199,649.55/22,752.82
6. Step 6: Final answer
   x = 17,501.11