Finding the Fourth Proportional to 16,781.99, 23,159.39 and 9,229.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,781.99 : 23,159.39 = 9,229.10 : x
2. Step 2: Convert to fraction form
   16,781.99/23,159.39 = 9,229.10/x
3. Step 3: Cross multiply
   16,781.99x = 23,159.39 × 9,229.10
4. Step 4: Simplify right side
   16,781.99x = 213,740,164.31
5. Step 5: Solve for x
   x = 213,740,164.31/16,781.99
6. Step 6: Final answer
   x = 12,736.29