Finding the Fourth Proportional to 31,488.72, 43,456.26 and 18,059.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,488.72 : 43,456.26 = 18,059.88 : x
2. Step 2: Convert to fraction form
   31,488.72/43,456.26 = 18,059.88/x
3. Step 3: Cross multiply
   31,488.72x = 43,456.26 × 18,059.88
4. Step 4: Simplify right side
   31,488.72x = 784,814,840.85
5. Step 5: Solve for x
   x = 784,814,840.85/31,488.72
6. Step 6: Final answer
   x = 24,923.68