Finding the Fourth Proportional to 12,629.34, 17,428.61 and 6,964.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,629.34 : 17,428.61 = 6,964.29 : x
2. Step 2: Convert to fraction form
   12,629.34/17,428.61 = 6,964.29/x
3. Step 3: Cross multiply
   12,629.34x = 17,428.61 × 6,964.29
4. Step 4: Simplify right side
   12,629.34x = 121,377,859.52
5. Step 5: Solve for x
   x = 121,377,859.52/12,629.34
6. Step 6: Final answer
   x = 9,610.78