Finding the Fourth Proportional to 3,949.40, 5,447.89 and 2,552.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.40 : 5,447.89 = 2,552.15 : x
2. Step 2: Convert to fraction form
   3,949.40/5,447.89 = 2,552.15/x
3. Step 3: Cross multiply
   3,949.40x = 5,447.89 × 2,552.15
4. Step 4: Simplify right side
   3,949.40x = 13,903,849.27
5. Step 5: Solve for x
   x = 13,903,849.27/3,949.40
6. Step 6: Final answer
   x = 3,520.49