Finding the Fourth Proportional to 17,681.78, 24,401.76 and 10,128.14

Step by Step Solution

1. Step 1: Write the proportion equation
   17,681.78 : 24,401.76 = 10,128.14 : x
2. Step 2: Convert to fraction form
   17,681.78/24,401.76 = 10,128.14/x
3. Step 3: Cross multiply
   17,681.78x = 24,401.76 × 10,128.14
4. Step 4: Simplify right side
   17,681.78x = 247,144,441.53
5. Step 5: Solve for x
   x = 247,144,441.53/17,681.78
6. Step 6: Final answer
   x = 13,977.35