Finding the Fourth Proportional to 9,020.71, 12,440.49 and 7,513.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.71 : 12,440.49 = 7,513.28 : x
2. Step 2: Convert to fraction form
   9,020.71/12,440.49 = 7,513.28/x
3. Step 3: Cross multiply
   9,020.71x = 12,440.49 × 7,513.28
4. Step 4: Simplify right side
   9,020.71x = 93,468,822.50
5. Step 5: Solve for x
   x = 93,468,822.50/9,020.71
6. Step 6: Final answer
   x = 10,361.58