Finding the Fourth Proportional to 3,039.40, 4,116.15 and 3,039.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,039.40 : 4,116.15 = 3,039.40 : x
2. Step 2: Convert to fraction form
   3,039.40/4,116.15 = 3,039.40/x
3. Step 3: Cross multiply
   3,039.40x = 4,116.15 × 3,039.40
4. Step 4: Simplify right side
   3,039.40x = 12,510,626.31
5. Step 5: Solve for x
   x = 12,510,626.31/3,039.40
6. Step 6: Final answer
   x = 4,116.15