Finding the Fourth Proportional to 3,796.90, 5,239.73 and 2,118.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,796.90 : 5,239.73 = 2,118.42 : x
2. Step 2: Convert to fraction form
   3,796.90/5,239.73 = 2,118.42/x
3. Step 3: Cross multiply
   3,796.90x = 5,239.73 × 2,118.42
4. Step 4: Simplify right side
   3,796.90x = 11,099,948.83
5. Step 5: Solve for x
   x = 11,099,948.83/3,796.90
6. Step 6: Final answer
   x = 2,923.42