Finding the Fourth Proportional to 8,760.48, 13,045.32 and 8,663.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.48 : 13,045.32 = 8,663.52 : x
2. Step 2: Convert to fraction form
   8,760.48/13,045.32 = 8,663.52/x
3. Step 3: Cross multiply
   8,760.48x = 13,045.32 × 8,663.52
4. Step 4: Simplify right side
   8,760.48x = 113,018,390.73
5. Step 5: Solve for x
   x = 113,018,390.73/8,760.48
6. Step 6: Final answer
   x = 12,900.94