Finding the Fourth Proportional to 3,821.62, 5,722.68 and 3,500.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.62 : 5,722.68 = 3,500.86 : x
2. Step 2: Convert to fraction form
   3,821.62/5,722.68 = 3,500.86/x
3. Step 3: Cross multiply
   3,821.62x = 5,722.68 × 3,500.86
4. Step 4: Simplify right side
   3,821.62x = 20,034,301.50
5. Step 5: Solve for x
   x = 20,034,301.50/3,821.62
6. Step 6: Final answer
   x = 5,242.36