Finding the Fourth Proportional to 3,498.64, 4,827.86 and 2,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.64 : 4,827.86 = 2,172.10 : x
2. Step 2: Convert to fraction form
   3,498.64/4,827.86 = 2,172.10/x
3. Step 3: Cross multiply
   3,498.64x = 4,827.86 × 2,172.10
4. Step 4: Simplify right side
   3,498.64x = 10,486,594.71
5. Step 5: Solve for x
   x = 10,486,594.71/3,498.64
6. Step 6: Final answer
   x = 2,997.33