Finding the Fourth Proportional to 12,016.97, 18,028.69 and 10,860.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.97 : 18,028.69 = 10,860.29 : x
2. Step 2: Convert to fraction form
   12,016.97/18,028.69 = 10,860.29/x
3. Step 3: Cross multiply
   12,016.97x = 18,028.69 × 10,860.29
4. Step 4: Simplify right side
   12,016.97x = 195,796,801.72
5. Step 5: Solve for x
   x = 195,796,801.72/12,016.97
6. Step 6: Final answer
   x = 16,293.36