Finding the Fourth Proportional to 42,651.53, 63,989.60 and 13,073.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,651.53 : 63,989.60 = 13,073.72 : x
2. Step 2: Convert to fraction form
   42,651.53/63,989.60 = 13,073.72/x
3. Step 3: Cross multiply
   42,651.53x = 63,989.60 × 13,073.72
4. Step 4: Simplify right side
   42,651.53x = 836,581,728.00
5. Step 5: Solve for x
   x = 836,581,728.00/42,651.53
6. Step 6: Final answer
   x = 19,614.35