Finding the Fourth Proportional to 10,980.80, 16,469.33 and 3,959.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.80 : 16,469.33 = 3,959.42 : x
2. Step 2: Convert to fraction form
   10,980.80/16,469.33 = 3,959.42/x
3. Step 3: Cross multiply
   10,980.80x = 16,469.33 × 3,959.42
4. Step 4: Simplify right side
   10,980.80x = 65,208,892.44
5. Step 5: Solve for x
   x = 65,208,892.44/10,980.80
6. Step 6: Final answer
   x = 5,938.45