Finding the Fourth Proportional to 3,933.16, 5,427.51 and 2,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.16 : 5,427.51 = 2,164.42 : x
2. Step 2: Convert to fraction form
   3,933.16/5,427.51 = 2,164.42/x
3. Step 3: Cross multiply
   3,933.16x = 5,427.51 × 2,164.42
4. Step 4: Simplify right side
   3,933.16x = 11,747,409.86
5. Step 5: Solve for x
   x = 11,747,409.86/3,933.16
6. Step 6: Final answer
   x = 2,986.76