Finding the Fourth Proportional to 17,143.41, 23,796.64 and 16,728.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,143.41 : 23,796.64 = 16,728.69 : x
2. Step 2: Convert to fraction form
   17,143.41/23,796.64 = 16,728.69/x
3. Step 3: Cross multiply
   17,143.41x = 23,796.64 × 16,728.69
4. Step 4: Simplify right side
   17,143.41x = 398,086,571.78
5. Step 5: Solve for x
   x = 398,086,571.78/17,143.41
6. Step 6: Final answer
   x = 23,220.97