Finding the Fourth Proportional to 3,930.72, 5,898.82 and 2,540.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.72 : 5,898.82 = 2,540.61 : x
2. Step 2: Convert to fraction form
   3,930.72/5,898.82 = 2,540.61/x
3. Step 3: Cross multiply
   3,930.72x = 5,898.82 × 2,540.61
4. Step 4: Simplify right side
   3,930.72x = 14,986,588.38
5. Step 5: Solve for x
   x = 14,986,588.38/3,930.72
6. Step 6: Final answer
   x = 3,812.68