Finding the Fourth Proportional to 22,785.57, 31,445.49 and 12,714.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,785.57 : 31,445.49 = 12,714.03 : x
2. Step 2: Convert to fraction form
   22,785.57/31,445.49 = 12,714.03/x
3. Step 3: Cross multiply
   22,785.57x = 31,445.49 × 12,714.03
4. Step 4: Simplify right side
   22,785.57x = 399,798,903.22
5. Step 5: Solve for x
   x = 399,798,903.22/22,785.57
6. Step 6: Final answer
   x = 17,546.14