Finding the Fourth Proportional to 16,921.36, 23,350.71 and 9,367.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,921.36 : 23,350.71 = 9,367.15 : x
2. Step 2: Convert to fraction form
   16,921.36/23,350.71 = 9,367.15/x
3. Step 3: Cross multiply
   16,921.36x = 23,350.71 × 9,367.15
4. Step 4: Simplify right side
   16,921.36x = 218,729,689.38
5. Step 5: Solve for x
   x = 218,729,689.38/16,921.36
6. Step 6: Final answer
   x = 12,926.25