Finding the Fourth Proportional to 13,128.33, 18,132.22 and 9,559.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,128.33 : 18,132.22 = 9,559.25 : x
2. Step 2: Convert to fraction form
   13,128.33/18,132.22 = 9,559.25/x
3. Step 3: Cross multiply
   13,128.33x = 18,132.22 × 9,559.25
4. Step 4: Simplify right side
   13,128.33x = 173,330,359.55
5. Step 5: Solve for x
   x = 173,330,359.55/13,128.33
6. Step 6: Final answer
   x = 13,202.77