Finding the Fourth Proportional to 17,868.65, 24,648.42 and 11,142.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,868.65 : 24,648.42 = 11,142.60 : x
2. Step 2: Convert to fraction form
   17,868.65/24,648.42 = 11,142.60/x
3. Step 3: Cross multiply
   17,868.65x = 24,648.42 × 11,142.60
4. Step 4: Simplify right side
   17,868.65x = 274,647,361.45
5. Step 5: Solve for x
   x = 274,647,361.45/17,868.65
6. Step 6: Final answer
   x = 15,370.35