Finding the Fourth Proportional to 40,468.56, 60,711.86 and 12,392.56

Step by Step Solution

1. Step 1: Write the proportion equation
   40,468.56 : 60,711.86 = 12,392.56 : x
2. Step 2: Convert to fraction form
   40,468.56/60,711.86 = 12,392.56/x
3. Step 3: Cross multiply
   40,468.56x = 60,711.86 × 12,392.56
4. Step 4: Simplify right side
   40,468.56x = 752,375,367.76
5. Step 5: Solve for x
   x = 752,375,367.76/40,468.56
6. Step 6: Final answer
   x = 18,591.60