Finding the Fourth Proportional to 3,672.31, 5,067.89 and 2,100.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.31 : 5,067.89 = 2,100.91 : x
2. Step 2: Convert to fraction form
   3,672.31/5,067.89 = 2,100.91/x
3. Step 3: Cross multiply
   3,672.31x = 5,067.89 × 2,100.91
4. Step 4: Simplify right side
   3,672.31x = 10,647,180.78
5. Step 5: Solve for x
   x = 10,647,180.78/3,672.31
6. Step 6: Final answer
   x = 2,899.31