Finding the Fourth Proportional to 3,688.12, 5,527.86 and 2,208.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.12 : 5,527.86 = 2,208.52 : x
2. Step 2: Convert to fraction form
   3,688.12/5,527.86 = 2,208.52/x
3. Step 3: Cross multiply
   3,688.12x = 5,527.86 × 2,208.52
4. Step 4: Simplify right side
   3,688.12x = 12,208,389.37
5. Step 5: Solve for x
   x = 12,208,389.37/3,688.12
6. Step 6: Final answer
   x = 3,310.19