Finding the Fourth Proportional to 3,743.49, 5,128.60 and 3,603.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,743.49 : 5,128.60 = 3,603.36 : x
2. Step 2: Convert to fraction form
   3,743.49/5,128.60 = 3,603.36/x
3. Step 3: Cross multiply
   3,743.49x = 5,128.60 × 3,603.36
4. Step 4: Simplify right side
   3,743.49x = 18,480,192.10
5. Step 5: Solve for x
   x = 18,480,192.10/3,743.49
6. Step 6: Final answer
   x = 4,936.62