Finding the Fourth Proportional to 3,767.57, 5,199.24 and 2,111.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,767.57 : 5,199.24 = 2,111.57 : x
2. Step 2: Convert to fraction form
   3,767.57/5,199.24 = 2,111.57/x
3. Step 3: Cross multiply
   3,767.57x = 5,199.24 × 2,111.57
4. Step 4: Simplify right side
   3,767.57x = 10,978,559.21
5. Step 5: Solve for x
   x = 10,978,559.21/3,767.57
6. Step 6: Final answer
   x = 2,913.96