Finding the Fourth Proportional to 2,644.72, 3,964.64 and 2,426.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.72 : 3,964.64 = 2,426.02 : x
2. Step 2: Convert to fraction form
   2,644.72/3,964.64 = 2,426.02/x
3. Step 3: Cross multiply
   2,644.72x = 3,964.64 × 2,426.02
4. Step 4: Simplify right side
   2,644.72x = 9,618,295.93
5. Step 5: Solve for x
   x = 9,618,295.93/2,644.72
6. Step 6: Final answer
   x = 3,636.79