Finding the Fourth Proportional to 12,480.24, 17,222.73 and 7,176.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.24 : 17,222.73 = 7,176.09 : x
2. Step 2: Convert to fraction form
   12,480.24/17,222.73 = 7,176.09/x
3. Step 3: Cross multiply
   12,480.24x = 17,222.73 × 7,176.09
4. Step 4: Simplify right side
   12,480.24x = 123,591,860.53
5. Step 5: Solve for x
   x = 123,591,860.53/12,480.24
6. Step 6: Final answer
   x = 9,903.00