Finding the Fourth Proportional to 12,109.06, 16,717.96 and 9,601.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.06 : 16,717.96 = 9,601.30 : x
2. Step 2: Convert to fraction form
   12,109.06/16,717.96 = 9,601.30/x
3. Step 3: Cross multiply
   12,109.06x = 16,717.96 × 9,601.30
4. Step 4: Simplify right side
   12,109.06x = 160,514,149.35
5. Step 5: Solve for x
   x = 160,514,149.35/12,109.06
6. Step 6: Final answer
   x = 13,255.71