Finding the Fourth Proportional to 9,105.07, 13,644.78 and 7,247.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.07 : 13,644.78 = 7,247.92 : x
2. Step 2: Convert to fraction form
   9,105.07/13,644.78 = 7,247.92/x
3. Step 3: Cross multiply
   9,105.07x = 13,644.78 × 7,247.92
4. Step 4: Simplify right side
   9,105.07x = 98,896,273.86
5. Step 5: Solve for x
   x = 98,896,273.86/9,105.07
6. Step 6: Final answer
   x = 10,861.67