Finding the Fourth Proportional to 37,443.62, 56,151.12 and 12,478.88

Step by Step Solution

1. Step 1: Write the proportion equation
   37,443.62 : 56,151.12 = 12,478.88 : x
2. Step 2: Convert to fraction form
   37,443.62/56,151.12 = 12,478.88/x
3. Step 3: Cross multiply
   37,443.62x = 56,151.12 × 12,478.88
4. Step 4: Simplify right side
   37,443.62x = 700,703,275.52
5. Step 5: Solve for x
   x = 700,703,275.52/37,443.62
6. Step 6: Final answer
   x = 18,713.55