Finding the Fourth Proportional to 3,867.12, 5,336.59 and 2,098.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867.12 : 5,336.59 = 2,098.72 : x
2. Step 2: Convert to fraction form
   3,867.12/5,336.59 = 2,098.72/x
3. Step 3: Cross multiply
   3,867.12x = 5,336.59 × 2,098.72
4. Step 4: Simplify right side
   3,867.12x = 11,200,008.16
5. Step 5: Solve for x
   x = 11,200,008.16/3,867.12
6. Step 6: Final answer
   x = 2,896.21