Finding the Fourth Proportional to 28,743.34, 39,665.81 and 16,168.09

Step by Step Solution

1. Step 1: Write the proportion equation
   28,743.34 : 39,665.81 = 16,168.09 : x
2. Step 2: Convert to fraction form
   28,743.34/39,665.81 = 16,168.09/x
3. Step 3: Cross multiply
   28,743.34x = 39,665.81 × 16,168.09
4. Step 4: Simplify right side
   28,743.34x = 641,320,386.00
5. Step 5: Solve for x
   x = 641,320,386.00/28,743.34
6. Step 6: Final answer
   x = 22,311.96