Finding the Fourth Proportional to 12,422.08, 17,142.54 and 7,117.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.08 : 17,142.54 = 7,117.24 : x
2. Step 2: Convert to fraction form
   12,422.08/17,142.54 = 7,117.24/x
3. Step 3: Cross multiply
   12,422.08x = 17,142.54 × 7,117.24
4. Step 4: Simplify right side
   12,422.08x = 122,007,571.39
5. Step 5: Solve for x
   x = 122,007,571.39/12,422.08
6. Step 6: Final answer
   x = 9,821.83