Finding the Fourth Proportional to 31,971.69, 47,962.46 and 10,906.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,971.69 : 47,962.46 = 10,906.79 : x
2. Step 2: Convert to fraction form
   31,971.69/47,962.46 = 10,906.79/x
3. Step 3: Cross multiply
   31,971.69x = 47,962.46 × 10,906.79
4. Step 4: Simplify right side
   31,971.69x = 523,116,626.28
5. Step 5: Solve for x
   x = 523,116,626.28/31,971.69
6. Step 6: Final answer
   x = 16,361.87