Finding the Fourth Proportional to 9,105.94, 12,562.29 and 5,223.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.94 : 12,562.29 = 5,223.28 : x
2. Step 2: Convert to fraction form
   9,105.94/12,562.29 = 5,223.28/x
3. Step 3: Cross multiply
   9,105.94x = 12,562.29 × 5,223.28
4. Step 4: Simplify right side
   9,105.94x = 65,616,358.11
5. Step 5: Solve for x
   x = 65,616,358.11/9,105.94
6. Step 6: Final answer
   x = 7,205.89