Finding the Fourth Proportional to 3,369.20, 5,065.34 and 2,647.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,369.20 : 5,065.34 = 2,647.49 : x
2. Step 2: Convert to fraction form
   3,369.20/5,065.34 = 2,647.49/x
3. Step 3: Cross multiply
   3,369.20x = 5,065.34 × 2,647.49
4. Step 4: Simplify right side
   3,369.20x = 13,410,398.43
5. Step 5: Solve for x
   x = 13,410,398.43/3,369.20
6. Step 6: Final answer
   x = 3,980.30