Finding the Fourth Proportional to 9,287.38, 12,815.91 and 5,254.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,287.38 : 12,815.91 = 5,254.18 : x
2. Step 2: Convert to fraction form
   9,287.38/12,815.91 = 5,254.18/x
3. Step 3: Cross multiply
   9,287.38x = 12,815.91 × 5,254.18
4. Step 4: Simplify right side
   9,287.38x = 67,337,098.00
5. Step 5: Solve for x
   x = 67,337,098.00/9,287.38
6. Step 6: Final answer
   x = 7,250.39