Finding the Fourth Proportional to 10,956.91, 15,127.46 and 8,434.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.91 : 15,127.46 = 8,434.27 : x
2. Step 2: Convert to fraction form
   10,956.91/15,127.46 = 8,434.27/x
3. Step 3: Cross multiply
   10,956.91x = 15,127.46 × 8,434.27
4. Step 4: Simplify right side
   10,956.91x = 127,589,082.05
5. Step 5: Solve for x
   x = 127,589,082.05/10,956.91
6. Step 6: Final answer
   x = 11,644.62