Finding the Fourth Proportional to 12,896.43, 17,797.01 and 7,231.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,896.43 : 17,797.01 = 7,231.17 : x
2. Step 2: Convert to fraction form
   12,896.43/17,797.01 = 7,231.17/x
3. Step 3: Cross multiply
   12,896.43x = 17,797.01 × 7,231.17
4. Step 4: Simplify right side
   12,896.43x = 128,693,255.72
5. Step 5: Solve for x
   x = 128,693,255.72/12,896.43
6. Step 6: Final answer
   x = 9,978.98