Finding the Fourth Proportional to 32,616.72, 45,012.78 and 18,470.88

Step by Step Solution

1. Step 1: Write the proportion equation
   32,616.72 : 45,012.78 = 18,470.88 : x
2. Step 2: Convert to fraction form
   32,616.72/45,012.78 = 18,470.88/x
3. Step 3: Cross multiply
   32,616.72x = 45,012.78 × 18,470.88
4. Step 4: Simplify right side
   32,616.72x = 831,425,657.85
5. Step 5: Solve for x
   x = 831,425,657.85/32,616.72
6. Step 6: Final answer
   x = 25,490.78