Finding the Fourth Proportional to 9,235.54, 12,743.56 and 5,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,235.54 : 12,743.56 = 5,256.72 : x
2. Step 2: Convert to fraction form
   9,235.54/12,743.56 = 5,256.72/x
3. Step 3: Cross multiply
   9,235.54x = 12,743.56 × 5,256.72
4. Step 4: Simplify right side
   9,235.54x = 66,989,326.72
5. Step 5: Solve for x
   x = 66,989,326.72/9,235.54
6. Step 6: Final answer
   x = 7,253.43