Finding the Fourth Proportional to 6,144.78, 9,169.98 and 5,488.68

Step by Step Solution

1. Step 1: Write the proportion equation
   6,144.78 : 9,169.98 = 5,488.68 : x
2. Step 2: Convert to fraction form
   6,144.78/9,169.98 = 5,488.68/x
3. Step 3: Cross multiply
   6,144.78x = 9,169.98 × 5,488.68
4. Step 4: Simplify right side
   6,144.78x = 50,331,085.83
5. Step 5: Solve for x
   x = 50,331,085.83/6,144.78
6. Step 6: Final answer
   x = 8,190.87