Finding the Fourth Proportional to 9,105.92, 12,566.40 and 5,571.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.92 : 12,566.40 = 5,571.12 : x
2. Step 2: Convert to fraction form
   9,105.92/12,566.40 = 5,571.12/x
3. Step 3: Cross multiply
   9,105.92x = 12,566.40 × 5,571.12
4. Step 4: Simplify right side
   9,105.92x = 70,008,922.37
5. Step 5: Solve for x
   x = 70,008,922.37/9,105.92
6. Step 6: Final answer
   x = 7,688.29