Finding the Fourth Proportional to 9,233.76, 12,743.09 and 5,256.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,233.76 : 12,743.09 = 5,256.15 : x
2. Step 2: Convert to fraction form
   9,233.76/12,743.09 = 5,256.15/x
3. Step 3: Cross multiply
   9,233.76x = 12,743.09 × 5,256.15
4. Step 4: Simplify right side
   9,233.76x = 66,979,592.50
5. Step 5: Solve for x
   x = 66,979,592.50/9,233.76
6. Step 6: Final answer
   x = 7,253.77