Finding the Fourth Proportional to 9,270.78, 12,793.41 and 5,078.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,270.78 : 12,793.41 = 5,078.94 : x
2. Step 2: Convert to fraction form
   9,270.78/12,793.41 = 5,078.94/x
3. Step 3: Cross multiply
   9,270.78x = 12,793.41 × 5,078.94
4. Step 4: Simplify right side
   9,270.78x = 64,976,961.79
5. Step 5: Solve for x
   x = 64,976,961.79/9,270.78
6. Step 6: Final answer
   x = 7,008.79