Finding the Fourth Proportional to 2,855.16, 3,936.32 and 2,563.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,855.16 : 3,936.32 = 2,563.56 : x
2. Step 2: Convert to fraction form
   2,855.16/3,936.32 = 2,563.56/x
3. Step 3: Cross multiply
   2,855.16x = 3,936.32 × 2,563.56
4. Step 4: Simplify right side
   2,855.16x = 10,090,992.50
5. Step 5: Solve for x
   x = 10,090,992.50/2,855.16
6. Step 6: Final answer
   x = 3,534.30