Finding the Fourth Proportional to 9,015.57, 12,440.21 and 5,035.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,015.57 : 12,440.21 = 5,035.91 : x
2. Step 2: Convert to fraction form
   9,015.57/12,440.21 = 5,035.91/x
3. Step 3: Cross multiply
   9,015.57x = 12,440.21 × 5,035.91
4. Step 4: Simplify right side
   9,015.57x = 62,647,690.56
5. Step 5: Solve for x
   x = 62,647,690.56/9,015.57
6. Step 6: Final answer
   x = 6,948.83