Finding the Fourth Proportional to 22,785.72, 31,444.25 and 12,713.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,785.72 : 31,444.25 = 12,713.57 : x
2. Step 2: Convert to fraction form
   22,785.72/31,444.25 = 12,713.57/x
3. Step 3: Cross multiply
   22,785.72x = 31,444.25 × 12,713.57
4. Step 4: Simplify right side
   22,785.72x = 399,768,452.68
5. Step 5: Solve for x
   x = 399,768,452.68/22,785.72
6. Step 6: Final answer
   x = 17,544.69