Finding the Fourth Proportional to 16,834.20, 23,230.59 and 9,177.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,834.20 : 23,230.59 = 9,177.31 : x
2. Step 2: Convert to fraction form
   16,834.20/23,230.59 = 9,177.31/x
3. Step 3: Cross multiply
   16,834.20x = 23,230.59 × 9,177.31
4. Step 4: Simplify right side
   16,834.20x = 213,194,363.55
5. Step 5: Solve for x
   x = 213,194,363.55/16,834.20
6. Step 6: Final answer
   x = 12,664.36