Finding the Fourth Proportional to 23,067.57, 31,833.33 and 13,989.90

Step by Step Solution

1. Step 1: Write the proportion equation
   23,067.57 : 31,833.33 = 13,989.90 : x
2. Step 2: Convert to fraction form
   23,067.57/31,833.33 = 13,989.90/x
3. Step 3: Cross multiply
   23,067.57x = 31,833.33 × 13,989.90
4. Step 4: Simplify right side
   23,067.57x = 445,345,103.37
5. Step 5: Solve for x
   x = 445,345,103.37/23,067.57
6. Step 6: Final answer
   x = 19,306.11