Finding the Fourth Proportional to 3,638.37, 5,021.01 and 2,066.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.37 : 5,021.01 = 2,066.49 : x
2. Step 2: Convert to fraction form
   3,638.37/5,021.01 = 2,066.49/x
3. Step 3: Cross multiply
   3,638.37x = 5,021.01 × 2,066.49
4. Step 4: Simplify right side
   3,638.37x = 10,375,866.95
5. Step 5: Solve for x
   x = 10,375,866.95/3,638.37
6. Step 6: Final answer
   x = 2,851.79