Finding the Fourth Proportional to 3,902.59, 5,855.78 and 3,581.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.59 : 5,855.78 = 3,581.83 : x
2. Step 2: Convert to fraction form
   3,902.59/5,855.78 = 3,581.83/x
3. Step 3: Cross multiply
   3,902.59x = 5,855.78 × 3,581.83
4. Step 4: Simplify right side
   3,902.59x = 20,974,408.48
5. Step 5: Solve for x
   x = 20,974,408.48/3,902.59
6. Step 6: Final answer
   x = 5,374.48