Finding the Fourth Proportional to 16,429.50, 22,673.52 and 9,356.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,429.50 : 22,673.52 = 9,356.31 : x
2. Step 2: Convert to fraction form
   16,429.50/22,673.52 = 9,356.31/x
3. Step 3: Cross multiply
   16,429.50x = 22,673.52 × 9,356.31
4. Step 4: Simplify right side
   16,429.50x = 212,140,481.91
5. Step 5: Solve for x
   x = 212,140,481.91/16,429.50
6. Step 6: Final answer
   x = 12,912.17