Finding the Fourth Proportional to 16,782.72, 23,160.42 and 9,229.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,782.72 : 23,160.42 = 9,229.38 : x
2. Step 2: Convert to fraction form
   16,782.72/23,160.42 = 9,229.38/x
3. Step 3: Cross multiply
   16,782.72x = 23,160.42 × 9,229.38
4. Step 4: Simplify right side
   16,782.72x = 213,756,317.14
5. Step 5: Solve for x
   x = 213,756,317.14/16,782.72
6. Step 6: Final answer
   x = 12,736.69