Finding the Fourth Proportional to 16,773.73, 23,147.76 and 9,220.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,773.73 : 23,147.76 = 9,220.05 : x
2. Step 2: Convert to fraction form
   16,773.73/23,147.76 = 9,220.05/x
3. Step 3: Cross multiply
   16,773.73x = 23,147.76 × 9,220.05
4. Step 4: Simplify right side
   16,773.73x = 213,423,504.59
5. Step 5: Solve for x
   x = 213,423,504.59/16,773.73
6. Step 6: Final answer
   x = 12,723.68