Finding the Fourth Proportional to 3,186.72, 4,396.76 and 2,067.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,186.72 : 4,396.76 = 2,067.72 : x
2. Step 2: Convert to fraction form
   3,186.72/4,396.76 = 2,067.72/x
3. Step 3: Cross multiply
   3,186.72x = 4,396.76 × 2,067.72
4. Step 4: Simplify right side
   3,186.72x = 9,091,268.59
5. Step 5: Solve for x
   x = 9,091,268.59/3,186.72
6. Step 6: Final answer
   x = 2,852.86