Finding the Fourth Proportional to 16,843.29, 23,245.07 and 9,290.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,843.29 : 23,245.07 = 9,290.31 : x
2. Step 2: Convert to fraction form
   16,843.29/23,245.07 = 9,290.31/x
3. Step 3: Cross multiply
   16,843.29x = 23,245.07 × 9,290.31
4. Step 4: Simplify right side
   16,843.29x = 215,953,906.27
5. Step 5: Solve for x
   x = 215,953,906.27/16,843.29
6. Step 6: Final answer
   x = 12,821.36