Finding the Fourth Proportional to 2,635.53, 3,629.63 and 2,578.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.53 : 3,629.63 = 2,578.12 : x
2. Step 2: Convert to fraction form
   2,635.53/3,629.63 = 2,578.12/x
3. Step 3: Cross multiply
   2,635.53x = 3,629.63 × 2,578.12
4. Step 4: Simplify right side
   2,635.53x = 9,357,608.81
5. Step 5: Solve for x
   x = 9,357,608.81/2,635.53
6. Step 6: Final answer
   x = 3,550.56