Finding the Fourth Proportional to 3,672.16, 5,067.88 and 2,100.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.16 : 5,067.88 = 2,100.55 : x
2. Step 2: Convert to fraction form
   3,672.16/5,067.88 = 2,100.55/x
3. Step 3: Cross multiply
   3,672.16x = 5,067.88 × 2,100.55
4. Step 4: Simplify right side
   3,672.16x = 10,645,335.33
5. Step 5: Solve for x
   x = 10,645,335.33/3,672.16
6. Step 6: Final answer
   x = 2,898.93