Finding the Fourth Proportional to 3,638.58, 5,020.59 and 2,066.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.58 : 5,020.59 = 2,066.58 : x
2. Step 2: Convert to fraction form
   3,638.58/5,020.59 = 2,066.58/x
3. Step 3: Cross multiply
   3,638.58x = 5,020.59 × 2,066.58
4. Step 4: Simplify right side
   3,638.58x = 10,375,450.88
5. Step 5: Solve for x
   x = 10,375,450.88/3,638.58
6. Step 6: Final answer
   x = 2,851.51