Finding the Fourth Proportional to 3,698.91, 5,103.27 and 2,636.85

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.91 : 5,103.27 = 2,636.85 : x
2. Step 2: Convert to fraction form
   3,698.91/5,103.27 = 2,636.85/x
3. Step 3: Cross multiply
   3,698.91x = 5,103.27 × 2,636.85
4. Step 4: Simplify right side
   3,698.91x = 13,456,557.50
5. Step 5: Solve for x
   x = 13,456,557.50/3,698.91
6. Step 6: Final answer
   x = 3,637.98