Finding the Fourth Proportional to 3,772.69, 5,687.97 and 3,518.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,772.69 : 5,687.97 = 3,518.59 : x
2. Step 2: Convert to fraction form
   3,772.69/5,687.97 = 3,518.59/x
3. Step 3: Cross multiply
   3,772.69x = 5,687.97 × 3,518.59
4. Step 4: Simplify right side
   3,772.69x = 20,013,634.36
5. Step 5: Solve for x
   x = 20,013,634.36/3,772.69
6. Step 6: Final answer
   x = 5,304.87