Finding the Fourth Proportional to 16,456.68, 22,709.78 and 9,382.94

Step by Step Solution

1. Step 1: Write the proportion equation
   16,456.68 : 22,709.78 = 9,382.94 : x
2. Step 2: Convert to fraction form
   16,456.68/22,709.78 = 9,382.94/x
3. Step 3: Cross multiply
   16,456.68x = 22,709.78 × 9,382.94
4. Step 4: Simplify right side
   16,456.68x = 213,084,503.15
5. Step 5: Solve for x
   x = 213,084,503.15/16,456.68
6. Step 6: Final answer
   x = 12,948.21