Finding the Fourth Proportional to 3,821.67, 5,741.32 and 3,664.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.67 : 5,741.32 = 3,664.05 : x
2. Step 2: Convert to fraction form
   3,821.67/5,741.32 = 3,664.05/x
3. Step 3: Cross multiply
   3,821.67x = 5,741.32 × 3,664.05
4. Step 4: Simplify right side
   3,821.67x = 21,036,474.39
5. Step 5: Solve for x
   x = 21,036,474.39/3,821.67
6. Step 6: Final answer
   x = 5,504.52