Finding the Fourth Proportional to 3,667.57, 5,528.77 and 3,356.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.57 : 5,528.77 = 3,356.20 : x
2. Step 2: Convert to fraction form
   3,667.57/5,528.77 = 3,356.20/x
3. Step 3: Cross multiply
   3,667.57x = 5,528.77 × 3,356.20
4. Step 4: Simplify right side
   3,667.57x = 18,555,657.87
5. Step 5: Solve for x
   x = 18,555,657.87/3,667.57
6. Step 6: Final answer
   x = 5,059.39