Finding the Fourth Proportional to 3,796.72, 5,239.34 and 2,118.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,796.72 : 5,239.34 = 2,118.10 : x
2. Step 2: Convert to fraction form
   3,796.72/5,239.34 = 2,118.10/x
3. Step 3: Cross multiply
   3,796.72x = 5,239.34 × 2,118.10
4. Step 4: Simplify right side
   3,796.72x = 11,097,435.46
5. Step 5: Solve for x
   x = 11,097,435.46/3,796.72
6. Step 6: Final answer
   x = 2,922.90