Finding the Fourth Proportional to 4,861.59, 7,286.23 and 3,105.91

Step by Step Solution

1. Step 1: Write the proportion equation
   4,861.59 : 7,286.23 = 3,105.91 : x
2. Step 2: Convert to fraction form
   4,861.59/7,286.23 = 3,105.91/x
3. Step 3: Cross multiply
   4,861.59x = 7,286.23 × 3,105.91
4. Step 4: Simplify right side
   4,861.59x = 22,630,401.27
5. Step 5: Solve for x
   x = 22,630,401.27/4,861.59
6. Step 6: Final answer
   x = 4,654.94