Finding the Fourth Proportional to 8,344.72, 12,487.48 and 7,260.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,344.72 : 12,487.48 = 7,260.88 : x
2. Step 2: Convert to fraction form
   8,344.72/12,487.48 = 7,260.88/x
3. Step 3: Cross multiply
   8,344.72x = 12,487.48 × 7,260.88
4. Step 4: Simplify right side
   8,344.72x = 90,670,093.78
5. Step 5: Solve for x
   x = 90,670,093.78/8,344.72
6. Step 6: Final answer
   x = 10,865.56