Finding the Fourth Proportional to 12,839.31, 17,718.21 and 7,097.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,839.31 : 17,718.21 = 7,097.36 : x
2. Step 2: Convert to fraction form
   12,839.31/17,718.21 = 7,097.36/x
3. Step 3: Cross multiply
   12,839.31x = 17,718.21 × 7,097.36
4. Step 4: Simplify right side
   12,839.31x = 125,752,426.33
5. Step 5: Solve for x
   x = 125,752,426.33/12,839.31
6. Step 6: Final answer
   x = 9,794.33