Finding the Fourth Proportional to 12,757.36, 19,139.27 and 9,016.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.36 : 19,139.27 = 9,016.50 : x
2. Step 2: Convert to fraction form
   12,757.36/19,139.27 = 9,016.50/x
3. Step 3: Cross multiply
   12,757.36x = 19,139.27 × 9,016.50
4. Step 4: Simplify right side
   12,757.36x = 172,569,144.91
5. Step 5: Solve for x
   x = 172,569,144.91/12,757.36
6. Step 6: Final answer
   x = 13,527.03