Finding the Fourth Proportional to 3,868.63, 5,349.17 and 3,806.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,868.63 : 5,349.17 = 3,806.08 : x
2. Step 2: Convert to fraction form
   3,868.63/5,349.17 = 3,806.08/x
3. Step 3: Cross multiply
   3,868.63x = 5,349.17 × 3,806.08
4. Step 4: Simplify right side
   3,868.63x = 20,359,365.10
5. Step 5: Solve for x
   x = 20,359,365.10/3,868.63
6. Step 6: Final answer
   x = 5,262.68