Finding the Fourth Proportional to 3,936.52, 5,432.24 and 2,168

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.52 : 5,432.24 = 2,168 : x
2. Step 2: Convert to fraction form
   3,936.52/5,432.24 = 2,168/x
3. Step 3: Cross multiply
   3,936.52x = 5,432.24 × 2,168
4. Step 4: Simplify right side
   3,936.52x = 11,777,096.32
5. Step 5: Solve for x
   x = 11,777,096.32/3,936.52
6. Step 6: Final answer
   x = 2,991.75