Finding the Fourth Proportional to 10,896.50, 16,347.18 and 3,971

Step by Step Solution

1. Step 1: Write the proportion equation
   10,896.50 : 16,347.18 = 3,971 : x
2. Step 2: Convert to fraction form
   10,896.50/16,347.18 = 3,971/x
3. Step 3: Cross multiply
   10,896.50x = 16,347.18 × 3,971
4. Step 4: Simplify right side
   10,896.50x = 64,914,651.78
5. Step 5: Solve for x
   x = 64,914,651.78/10,896.50
6. Step 6: Final answer
   x = 5,957.39