Finding the Fourth Proportional to 12,329.31, 17,010.30 and 7,020.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,329.31 : 17,010.30 = 7,020.36 : x
2. Step 2: Convert to fraction form
   12,329.31/17,010.30 = 7,020.36/x
3. Step 3: Cross multiply
   12,329.31x = 17,010.30 × 7,020.36
4. Step 4: Simplify right side
   12,329.31x = 119,418,429.71
5. Step 5: Solve for x
   x = 119,418,429.71/12,329.31
6. Step 6: Final answer
   x = 9,685.74