Finding the Fourth Proportional to 10,906.72, 16,350 and 3,976

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.72 : 16,350 = 3,976 : x
2. Step 2: Convert to fraction form
   10,906.72/16,350 = 3,976/x
3. Step 3: Cross multiply
   10,906.72x = 16,350 × 3,976
4. Step 4: Simplify right side
   10,906.72x = 65,007,600
5. Step 5: Solve for x
   x = 65,007,600/10,906.72
6. Step 6: Final answer
   x = 5,960.33