Finding the Fourth Proportional to 17,679.78, 24,399 and 10,126.14

Step by Step Solution

1. Step 1: Write the proportion equation
   17,679.78 : 24,399 = 10,126.14 : x
2. Step 2: Convert to fraction form
   17,679.78/24,399 = 10,126.14/x
3. Step 3: Cross multiply
   17,679.78x = 24,399 × 10,126.14
4. Step 4: Simplify right side
   17,679.78x = 247,067,689.86
5. Step 5: Solve for x
   x = 247,067,689.86/17,679.78
6. Step 6: Final answer
   x = 13,974.59