Finding the Fourth Proportional to 12,480.96, 17,223.12 and 7,174.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.96 : 17,223.12 = 7,174.56 : x
2. Step 2: Convert to fraction form
   12,480.96/17,223.12 = 7,174.56/x
3. Step 3: Cross multiply
   12,480.96x = 17,223.12 × 7,174.56
4. Step 4: Simplify right side
   12,480.96x = 123,568,307.83
5. Step 5: Solve for x
   x = 123,568,307.83/12,480.96
6. Step 6: Final answer
   x = 9,900.55