Finding the Fourth Proportional to 9,240.27, 12,748.41 and 5,260.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,240.27 : 12,748.41 = 5,260.39 : x
2. Step 2: Convert to fraction form
   9,240.27/12,748.41 = 5,260.39/x
3. Step 3: Cross multiply
   9,240.27x = 12,748.41 × 5,260.39
4. Step 4: Simplify right side
   9,240.27x = 67,061,608.48
5. Step 5: Solve for x
   x = 67,061,608.48/9,240.27
6. Step 6: Final answer
   x = 7,257.54