Finding the Fourth Proportional to 4,787.74, 7,179.27 and 2,839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,787.74 : 7,179.27 = 2,839.42 : x
2. Step 2: Convert to fraction form
   4,787.74/7,179.27 = 2,839.42/x
3. Step 3: Cross multiply
   4,787.74x = 7,179.27 × 2,839.42
4. Step 4: Simplify right side
   4,787.74x = 20,384,962.82
5. Step 5: Solve for x
   x = 20,384,962.82/4,787.74
6. Step 6: Final answer
   x = 4,257.74