Finding the Fourth Proportional to 12,429.18, 17,151.75 and 6,839.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,429.18 : 17,151.75 = 6,839.82 : x
2. Step 2: Convert to fraction form
   12,429.18/17,151.75 = 6,839.82/x
3. Step 3: Cross multiply
   12,429.18x = 17,151.75 × 6,839.82
4. Step 4: Simplify right side
   12,429.18x = 117,314,882.69
5. Step 5: Solve for x
   x = 117,314,882.69/12,429.18
6. Step 6: Final answer
   x = 9,438.67