Finding the Fourth Proportional to 38,443.02, 57,672.72 and 12,149.88

Step by Step Solution

1. Step 1: Write the proportion equation
   38,443.02 : 57,672.72 = 12,149.88 : x
2. Step 2: Convert to fraction form
   38,443.02/57,672.72 = 12,149.88/x
3. Step 3: Cross multiply
   38,443.02x = 57,672.72 × 12,149.88
4. Step 4: Simplify right side
   38,443.02x = 700,716,627.27
5. Step 5: Solve for x
   x = 700,716,627.27/38,443.02
6. Step 6: Final answer
   x = 18,227.41