Finding the Fourth Proportional to 12,687.27, 17,514.24 and 9,056.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,687.27 : 17,514.24 = 9,056.09 : x
2. Step 2: Convert to fraction form
   12,687.27/17,514.24 = 9,056.09/x
3. Step 3: Cross multiply
   12,687.27x = 17,514.24 × 9,056.09
4. Step 4: Simplify right side
   12,687.27x = 158,610,495.97
5. Step 5: Solve for x
   x = 158,610,495.97/12,687.27
6. Step 6: Final answer
   x = 12,501.55