Finding the Fourth Proportional to 10,934.01, 16,399.25 and 3,912.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,934.01 : 16,399.25 = 3,912.72 : x
2. Step 2: Convert to fraction form
   10,934.01/16,399.25 = 3,912.72/x
3. Step 3: Cross multiply
   10,934.01x = 16,399.25 × 3,912.72
4. Step 4: Simplify right side
   10,934.01x = 64,165,653.90
5. Step 5: Solve for x
   x = 64,165,653.90/10,934.01
6. Step 6: Final answer
   x = 5,868.45