Finding the Fourth Proportional to 3,910.76, 5,396.83 and 2,142.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910.76 : 5,396.83 = 2,142.33 : x
2. Step 2: Convert to fraction form
   3,910.76/5,396.83 = 2,142.33/x
3. Step 3: Cross multiply
   3,910.76x = 5,396.83 × 2,142.33
4. Step 4: Simplify right side
   3,910.76x = 11,561,795.58
5. Step 5: Solve for x
   x = 11,561,795.58/3,910.76
6. Step 6: Final answer
   x = 2,956.40