Finding the Fourth Proportional to 16,805.50, 23,191.59 and 9,355.26

Step by Step Solution

1. Step 1: Write the proportion equation
   16,805.50 : 23,191.59 = 9,355.26 : x
2. Step 2: Convert to fraction form
   16,805.50/23,191.59 = 9,355.26/x
3. Step 3: Cross multiply
   16,805.50x = 23,191.59 × 9,355.26
4. Step 4: Simplify right side
   16,805.50x = 216,963,354.26
5. Step 5: Solve for x
   x = 216,963,354.26/16,805.50
6. Step 6: Final answer
   x = 12,910.26