Finding the Fourth Proportional to 2,918.36, 4,007.72 and 2,498.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,918.36 : 4,007.72 = 2,498.72 : x
2. Step 2: Convert to fraction form
   2,918.36/4,007.72 = 2,498.72/x
3. Step 3: Cross multiply
   2,918.36x = 4,007.72 × 2,498.72
4. Step 4: Simplify right side
   2,918.36x = 10,014,170.12
5. Step 5: Solve for x
   x = 10,014,170.12/2,918.36
6. Step 6: Final answer
   x = 3,431.44