Finding the Fourth Proportional to 3,878.72, 5,838.80 and 3,342.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.72 : 5,838.80 = 3,342.80 : x
2. Step 2: Convert to fraction form
   3,878.72/5,838.80 = 3,342.80/x
3. Step 3: Cross multiply
   3,878.72x = 5,838.80 × 3,342.80
4. Step 4: Simplify right side
   3,878.72x = 19,517,940.64
5. Step 5: Solve for x
   x = 19,517,940.64/3,878.72
6. Step 6: Final answer
   x = 5,032.06