Finding the Fourth Proportional to 8,124.72, 12,187.52 and 2,578.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,124.72 : 12,187.52 = 2,578.49 : x
2. Step 2: Convert to fraction form
   8,124.72/12,187.52 = 2,578.49/x
3. Step 3: Cross multiply
   8,124.72x = 12,187.52 × 2,578.49
4. Step 4: Simplify right side
   8,124.72x = 31,425,324.61
5. Step 5: Solve for x
   x = 31,425,324.61/8,124.72
6. Step 6: Final answer
   x = 3,867.87