Finding the Fourth Proportional to 3,615.12, 4,993.29 and 2,618.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.12 : 4,993.29 = 2,618.82 : x
2. Step 2: Convert to fraction form
   3,615.12/4,993.29 = 2,618.82/x
3. Step 3: Cross multiply
   3,615.12x = 4,993.29 × 2,618.82
4. Step 4: Simplify right side
   3,615.12x = 13,076,527.72
5. Step 5: Solve for x
   x = 13,076,527.72/3,615.12
6. Step 6: Final answer
   x = 3,617.18