Finding the Fourth Proportional to 3,700.53, 5,105.52 and 2,638.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.53 : 5,105.52 = 2,638.46 : x
2. Step 2: Convert to fraction form
   3,700.53/5,105.52 = 2,638.46/x
3. Step 3: Cross multiply
   3,700.53x = 5,105.52 × 2,638.46
4. Step 4: Simplify right side
   3,700.53x = 13,470,723.06
5. Step 5: Solve for x
   x = 13,470,723.06/3,700.53
6. Step 6: Final answer
   x = 3,640.21