Finding the Fourth Proportional to 10,806.50, 16,211.10 and 3,881

Step by Step Solution

1. Step 1: Write the proportion equation
   10,806.50 : 16,211.10 = 3,881 : x
2. Step 2: Convert to fraction form
   10,806.50/16,211.10 = 3,881/x
3. Step 3: Cross multiply
   10,806.50x = 16,211.10 × 3,881
4. Step 4: Simplify right side
   10,806.50x = 62,915,279.10
5. Step 5: Solve for x
   x = 62,915,279.10/10,806.50
6. Step 6: Final answer
   x = 5,821.98