Finding the Fourth Proportional to 3,997.94, 5,518.56 and 2,635.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.94 : 5,518.56 = 2,635.31 : x
2. Step 2: Convert to fraction form
   3,997.94/5,518.56 = 2,635.31/x
3. Step 3: Cross multiply
   3,997.94x = 5,518.56 × 2,635.31
4. Step 4: Simplify right side
   3,997.94x = 14,543,116.35
5. Step 5: Solve for x
   x = 14,543,116.35/3,997.94
6. Step 6: Final answer
   x = 3,637.66