Finding the Fourth Proportional to 8,105.20, 11,222.04 and 7,951.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.20 : 11,222.04 = 7,951.60 : x
2. Step 2: Convert to fraction form
   8,105.20/11,222.04 = 7,951.60/x
3. Step 3: Cross multiply
   8,105.20x = 11,222.04 × 7,951.60
4. Step 4: Simplify right side
   8,105.20x = 89,233,173.26
5. Step 5: Solve for x
   x = 89,233,173.26/8,105.20
6. Step 6: Final answer
   x = 11,009.37