Finding the Fourth Proportional to 9,105.24, 12,563.10 and 7,112.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.24 : 12,563.10 = 7,112.28 : x
2. Step 2: Convert to fraction form
   9,105.24/12,563.10 = 7,112.28/x
3. Step 3: Cross multiply
   9,105.24x = 12,563.10 × 7,112.28
4. Step 4: Simplify right side
   9,105.24x = 89,352,284.87
5. Step 5: Solve for x
   x = 89,352,284.87/9,105.24
6. Step 6: Final answer
   x = 9,813.28