Finding the Fourth Proportional to 5,540.30, 8,318.55 and 3,904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,540.30 : 8,318.55 = 3,904.10 : x
2. Step 2: Convert to fraction form
   5,540.30/8,318.55 = 3,904.10/x
3. Step 3: Cross multiply
   5,540.30x = 8,318.55 × 3,904.10
4. Step 4: Simplify right side
   5,540.30x = 32,476,451.06
5. Step 5: Solve for x
   x = 32,476,451.06/5,540.30
6. Step 6: Final answer
   x = 5,861.86