Finding the Fourth Proportional to 12,160.72, 16,785.96 and 7,126.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,160.72 : 16,785.96 = 7,126.56 : x
2. Step 2: Convert to fraction form
   12,160.72/16,785.96 = 7,126.56/x
3. Step 3: Cross multiply
   12,160.72x = 16,785.96 × 7,126.56
4. Step 4: Simplify right side
   12,160.72x = 119,626,151.10
5. Step 5: Solve for x
   x = 119,626,151.10/12,160.72
6. Step 6: Final answer
   x = 9,837.09