Finding the Fourth Proportional to 9,399.69, 14,016.55 and 9,315.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.69 : 14,016.55 = 9,315.33 : x
2. Step 2: Convert to fraction form
   9,399.69/14,016.55 = 9,315.33/x
3. Step 3: Cross multiply
   9,399.69x = 14,016.55 × 9,315.33
4. Step 4: Simplify right side
   9,399.69x = 130,568,788.71
5. Step 5: Solve for x
   x = 130,568,788.71/9,399.69
6. Step 6: Final answer
   x = 13,890.75