Finding the Fourth Proportional to 3,696.12, 5,565.72 and 2,728.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,696.12 : 5,565.72 = 2,728.98 : x
2. Step 2: Convert to fraction form
   3,696.12/5,565.72 = 2,728.98/x
3. Step 3: Cross multiply
   3,696.12x = 5,565.72 × 2,728.98
4. Step 4: Simplify right side
   3,696.12x = 15,188,738.57
5. Step 5: Solve for x
   x = 15,188,738.57/3,696.12
6. Step 6: Final answer
   x = 4,109.37