Finding the Fourth Proportional to 3,672.16, 5,067.80 and 2,100.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.16 : 5,067.80 = 2,100.76 : x
2. Step 2: Convert to fraction form
   3,672.16/5,067.80 = 2,100.76/x
3. Step 3: Cross multiply
   3,672.16x = 5,067.80 × 2,100.76
4. Step 4: Simplify right side
   3,672.16x = 10,646,231.53
5. Step 5: Solve for x
   x = 10,646,231.53/3,672.16
6. Step 6: Final answer
   x = 2,899.17