Finding the Fourth Proportional to 5,092.38, 7,639.72 and 2,318.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,092.38 : 7,639.72 = 2,318.31 : x
2. Step 2: Convert to fraction form
   5,092.38/7,639.72 = 2,318.31/x
3. Step 3: Cross multiply
   5,092.38x = 7,639.72 × 2,318.31
4. Step 4: Simplify right side
   5,092.38x = 17,711,239.27
5. Step 5: Solve for x
   x = 17,711,239.27/5,092.38
6. Step 6: Final answer
   x = 3,477.99