Finding the Fourth Proportional to 16,773.89, 23,147.71 and 9,220.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,773.89 : 23,147.71 = 9,220.06 : x
2. Step 2: Convert to fraction form
   16,773.89/23,147.71 = 9,220.06/x
3. Step 3: Cross multiply
   16,773.89x = 23,147.71 × 9,220.06
4. Step 4: Simplify right side
   16,773.89x = 213,423,366.95
5. Step 5: Solve for x
   x = 213,423,366.95/16,773.89
6. Step 6: Final answer
   x = 12,723.54