Finding the Fourth Proportional to 3,498.36, 4,827.98 and 2,172.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.36 : 4,827.98 = 2,172.12 : x
2. Step 2: Convert to fraction form
   3,498.36/4,827.98 = 2,172.12/x
3. Step 3: Cross multiply
   3,498.36x = 4,827.98 × 2,172.12
4. Step 4: Simplify right side
   3,498.36x = 10,486,951.92
5. Step 5: Solve for x
   x = 10,486,951.92/3,498.36
6. Step 6: Final answer
   x = 2,997.68