Finding the Fourth Proportional to 7,978.08, 11,959.44 and 5,049.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978.08 : 11,959.44 = 5,049.12 : x
2. Step 2: Convert to fraction form
   7,978.08/11,959.44 = 5,049.12/x
3. Step 3: Cross multiply
   7,978.08x = 11,959.44 × 5,049.12
4. Step 4: Simplify right side
   7,978.08x = 60,384,647.69
5. Step 5: Solve for x
   x = 60,384,647.69/7,978.08
6. Step 6: Final answer
   x = 7,568.82