Finding the Fourth Proportional to 12,644.72, 17,452.37 and 8,396.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,644.72 : 17,452.37 = 8,396.14 : x
2. Step 2: Convert to fraction form
   12,644.72/17,452.37 = 8,396.14/x
3. Step 3: Cross multiply
   12,644.72x = 17,452.37 × 8,396.14
4. Step 4: Simplify right side
   12,644.72x = 146,532,541.85
5. Step 5: Solve for x
   x = 146,532,541.85/12,644.72
6. Step 6: Final answer
   x = 11,588.44