Finding the Fourth Proportional to 9,236.29, 12,744.59 and 5,257.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,236.29 : 12,744.59 = 5,257.47 : x
2. Step 2: Convert to fraction form
   9,236.29/12,744.59 = 5,257.47/x
3. Step 3: Cross multiply
   9,236.29x = 12,744.59 × 5,257.47
4. Step 4: Simplify right side
   9,236.29x = 67,004,299.59
5. Step 5: Solve for x
   x = 67,004,299.59/9,236.29
6. Step 6: Final answer
   x = 7,254.46