Finding the Fourth Proportional to 10,965.50, 16,446.43 and 3,944.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,965.50 : 16,446.43 = 3,944.09 : x
2. Step 2: Convert to fraction form
   10,965.50/16,446.43 = 3,944.09/x
3. Step 3: Cross multiply
   10,965.50x = 16,446.43 × 3,944.09
4. Step 4: Simplify right side
   10,965.50x = 64,866,200.10
5. Step 5: Solve for x
   x = 64,866,200.10/10,965.50
6. Step 6: Final answer
   x = 5,915.48