Finding the Fourth Proportional to 10,896.12, 16,340.92 and 3,969

Step by Step Solution

1. Step 1: Write the proportion equation
   10,896.12 : 16,340.92 = 3,969 : x
2. Step 2: Convert to fraction form
   10,896.12/16,340.92 = 3,969/x
3. Step 3: Cross multiply
   10,896.12x = 16,340.92 × 3,969
4. Step 4: Simplify right side
   10,896.12x = 64,857,111.48
5. Step 5: Solve for x
   x = 64,857,111.48/10,896.12
6. Step 6: Final answer
   x = 5,952.31