Finding the Fourth Proportional to 3,978.48, 5,963.43 and 2,518.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.48 : 5,963.43 = 2,518.05 : x
2. Step 2: Convert to fraction form
   3,978.48/5,963.43 = 2,518.05/x
3. Step 3: Cross multiply
   3,978.48x = 5,963.43 × 2,518.05
4. Step 4: Simplify right side
   3,978.48x = 15,016,214.91
5. Step 5: Solve for x
   x = 15,016,214.91/3,978.48
6. Step 6: Final answer
   x = 3,774.36