Finding the Fourth Proportional to 23,087.75, 31,857 and 13,016.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,087.75 : 31,857 = 13,016.18 : x
2. Step 2: Convert to fraction form
   23,087.75/31,857 = 13,016.18/x
3. Step 3: Cross multiply
   23,087.75x = 31,857 × 13,016.18
4. Step 4: Simplify right side
   23,087.75x = 414,656,286.98
5. Step 5: Solve for x
   x = 414,656,286.98/23,087.75
6. Step 6: Final answer
   x = 17,960.02