Finding the Fourth Proportional to 4,986.78, 7,436.16 and 4,942.35

Step by Step Solution

1. Step 1: Write the proportion equation
   4,986.78 : 7,436.16 = 4,942.35 : x
2. Step 2: Convert to fraction form
   4,986.78/7,436.16 = 4,942.35/x
3. Step 3: Cross multiply
   4,986.78x = 7,436.16 × 4,942.35
4. Step 4: Simplify right side
   4,986.78x = 36,752,105.38
5. Step 5: Solve for x
   x = 36,752,105.38/4,986.78
6. Step 6: Final answer
   x = 7,369.91