Finding the Fourth Proportional to 22,581.28, 31,164.78 and 13,149.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.28 : 31,164.78 = 13,149.82 : x
2. Step 2: Convert to fraction form
   22,581.28/31,164.78 = 13,149.82/x
3. Step 3: Cross multiply
   22,581.28x = 31,164.78 × 13,149.82
4. Step 4: Simplify right side
   22,581.28x = 409,811,247.34
5. Step 5: Solve for x
   x = 409,811,247.34/22,581.28
6. Step 6: Final answer
   x = 18,148.27