Finding the Fourth Proportional to 31,725.18, 43,786.17 and 18,294.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,725.18 : 43,786.17 = 18,294.03 : x
2. Step 2: Convert to fraction form
   31,725.18/43,786.17 = 18,294.03/x
3. Step 3: Cross multiply
   31,725.18x = 43,786.17 × 18,294.03
4. Step 4: Simplify right side
   31,725.18x = 801,025,507.57
5. Step 5: Solve for x
   x = 801,025,507.57/31,725.18
6. Step 6: Final answer
   x = 25,248.89