Finding the Fourth Proportional to 3,678.27, 5,073.60 and 2,420.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.27 : 5,073.60 = 2,420.47 : x
2. Step 2: Convert to fraction form
   3,678.27/5,073.60 = 2,420.47/x
3. Step 3: Cross multiply
   3,678.27x = 5,073.60 × 2,420.47
4. Step 4: Simplify right side
   3,678.27x = 12,280,496.59
5. Step 5: Solve for x
   x = 12,280,496.59/3,678.27
6. Step 6: Final answer
   x = 3,338.66