Finding the Fourth Proportional to 13,223.25, 18,248.22 and 7,558.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,223.25 : 18,248.22 = 7,558.79 : x
2. Step 2: Convert to fraction form
   13,223.25/18,248.22 = 7,558.79/x
3. Step 3: Cross multiply
   13,223.25x = 18,248.22 × 7,558.79
4. Step 4: Simplify right side
   13,223.25x = 137,934,371.61
5. Step 5: Solve for x
   x = 137,934,371.61/13,223.25
6. Step 6: Final answer
   x = 10,431.20