Finding the Fourth Proportional to 16,805.57, 23,191.67 and 9,355.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,805.57 : 23,191.67 = 9,355.33 : x
2. Step 2: Convert to fraction form
   16,805.57/23,191.67 = 9,355.33/x
3. Step 3: Cross multiply
   16,805.57x = 23,191.67 × 9,355.33
4. Step 4: Simplify right side
   16,805.57x = 216,965,726.10
5. Step 5: Solve for x
   x = 216,965,726.10/16,805.57
6. Step 6: Final answer
   x = 12,910.35