Finding the Fourth Proportional to 4,196.78, 5,791.84 and 2,778.01

Step by Step Solution

1. Step 1: Write the proportion equation
   4,196.78 : 5,791.84 = 2,778.01 : x
2. Step 2: Convert to fraction form
   4,196.78/5,791.84 = 2,778.01/x
3. Step 3: Cross multiply
   4,196.78x = 5,791.84 × 2,778.01
4. Step 4: Simplify right side
   4,196.78x = 16,089,800.59
5. Step 5: Solve for x
   x = 16,089,800.59/4,196.78
6. Step 6: Final answer
   x = 3,833.85