Finding the Fourth Proportional to 16,387.30, 22,614.39 and 9,315.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,387.30 : 22,614.39 = 9,315.09 : x
2. Step 2: Convert to fraction form
   16,387.30/22,614.39 = 9,315.09/x
3. Step 3: Cross multiply
   16,387.30x = 22,614.39 × 9,315.09
4. Step 4: Simplify right side
   16,387.30x = 210,655,078.15
5. Step 5: Solve for x
   x = 210,655,078.15/16,387.30
6. Step 6: Final answer
   x = 12,854.78