Finding the Fourth Proportional to 3,936.73, 5,432.70 and 2,168.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.73 : 5,432.70 = 2,168.34 : x
2. Step 2: Convert to fraction form
   3,936.73/5,432.70 = 2,168.34/x
3. Step 3: Cross multiply
   3,936.73x = 5,432.70 × 2,168.34
4. Step 4: Simplify right side
   3,936.73x = 11,779,940.72
5. Step 5: Solve for x
   x = 11,779,940.72/3,936.73
6. Step 6: Final answer
   x = 2,992.32