Finding the Fourth Proportional to 9,236.16, 12,744.72 and 5,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,236.16 : 12,744.72 = 5,256.72 : x
2. Step 2: Convert to fraction form
   9,236.16/12,744.72 = 5,256.72/x
3. Step 3: Cross multiply
   9,236.16x = 12,744.72 × 5,256.72
4. Step 4: Simplify right side
   9,236.16x = 66,995,424.52
5. Step 5: Solve for x
   x = 66,995,424.52/9,236.16
6. Step 6: Final answer
   x = 7,253.60