Finding the Fourth Proportional to 23,139.28, 31,928.76 and 13,067.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,139.28 : 31,928.76 = 13,067.52 : x
2. Step 2: Convert to fraction form
   23,139.28/31,928.76 = 13,067.52/x
3. Step 3: Cross multiply
   23,139.28x = 31,928.76 × 13,067.52
4. Step 4: Simplify right side
   23,139.28x = 417,229,709.88
5. Step 5: Solve for x
   x = 417,229,709.88/23,139.28
6. Step 6: Final answer
   x = 18,031.23