Finding the Fourth Proportional to 3,687.57, 5,528.58 and 2,226.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.57 : 5,528.58 = 2,226.38 : x
2. Step 2: Convert to fraction form
   3,687.57/5,528.58 = 2,226.38/x
3. Step 3: Cross multiply
   3,687.57x = 5,528.58 × 2,226.38
4. Step 4: Simplify right side
   3,687.57x = 12,308,692.30
5. Step 5: Solve for x
   x = 12,308,692.30/3,687.57
6. Step 6: Final answer
   x = 3,337.89