Finding the Fourth Proportional to 3,896.79, 5,821.04 and 3,506.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,896.79 : 5,821.04 = 3,506.16 : x
2. Step 2: Convert to fraction form
   3,896.79/5,821.04 = 3,506.16/x
3. Step 3: Cross multiply
   3,896.79x = 5,821.04 × 3,506.16
4. Step 4: Simplify right side
   3,896.79x = 20,409,497.61
5. Step 5: Solve for x
   x = 20,409,497.61/3,896.79
6. Step 6: Final answer
   x = 5,237.52