Finding the Fourth Proportional to 32,691.18, 45,112.50 and 18,543.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,691.18 : 45,112.50 = 18,543.72 : x
2. Step 2: Convert to fraction form
   32,691.18/45,112.50 = 18,543.72/x
3. Step 3: Cross multiply
   32,691.18x = 45,112.50 × 18,543.72
4. Step 4: Simplify right side
   32,691.18x = 836,553,568.50
5. Step 5: Solve for x
   x = 836,553,568.50/32,691.18
6. Step 6: Final answer
   x = 25,589.58