Finding the Fourth Proportional to 12,480.42, 17,223.99 and 7,176.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.42 : 17,223.99 = 7,176.96 : x
2. Step 2: Convert to fraction form
   12,480.42/17,223.99 = 7,176.96/x
3. Step 3: Cross multiply
   12,480.42x = 17,223.99 × 7,176.96
4. Step 4: Simplify right side
   12,480.42x = 123,615,887.27
5. Step 5: Solve for x
   x = 123,615,887.27/12,480.42
6. Step 6: Final answer
   x = 9,904.79