Finding the Fourth Proportional to 3,819.96, 5,732.91 and 2,658.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819.96 : 5,732.91 = 2,658.15 : x
2. Step 2: Convert to fraction form
   3,819.96/5,732.91 = 2,658.15/x
3. Step 3: Cross multiply
   3,819.96x = 5,732.91 × 2,658.15
4. Step 4: Simplify right side
   3,819.96x = 15,238,934.72
5. Step 5: Solve for x
   x = 15,238,934.72/3,819.96
6. Step 6: Final answer
   x = 3,989.29