Finding the Fourth Proportional to 12,423.24, 17,144.37 and 7,119.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,423.24 : 17,144.37 = 7,119.72 : x
2. Step 2: Convert to fraction form
   12,423.24/17,144.37 = 7,119.72/x
3. Step 3: Cross multiply
   12,423.24x = 17,144.37 × 7,119.72
4. Step 4: Simplify right side
   12,423.24x = 122,063,113.98
5. Step 5: Solve for x
   x = 122,063,113.98/12,423.24
6. Step 6: Final answer
   x = 9,825.38