Finding the Fourth Proportional to 3,898.49, 5,833.76 and 3,637.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.49 : 5,833.76 = 3,637.80 : x
2. Step 2: Convert to fraction form
   3,898.49/5,833.76 = 3,637.80/x
3. Step 3: Cross multiply
   3,898.49x = 5,833.76 × 3,637.80
4. Step 4: Simplify right side
   3,898.49x = 21,222,033.94
5. Step 5: Solve for x
   x = 21,222,033.94/3,898.49
6. Step 6: Final answer
   x = 5,443.66