Finding the Fourth Proportional to 3,638.52, 5,020.98 and 2,066.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,638.52 : 5,020.98 = 2,066.58 : x
2. Step 2: Convert to fraction form
   3,638.52/5,020.98 = 2,066.58/x
3. Step 3: Cross multiply
   3,638.52x = 5,020.98 × 2,066.58
4. Step 4: Simplify right side
   3,638.52x = 10,376,256.85
5. Step 5: Solve for x
   x = 10,376,256.85/3,638.52
6. Step 6: Final answer
   x = 2,851.78