Finding the Fourth Proportional to 14,178.69, 21,269.25 and 5,408.82

Step by Step Solution

1. Step 1: Write the proportion equation
   14,178.69 : 21,269.25 = 5,408.82 : x
2. Step 2: Convert to fraction form
   14,178.69/21,269.25 = 5,408.82/x
3. Step 3: Cross multiply
   14,178.69x = 21,269.25 × 5,408.82
4. Step 4: Simplify right side
   14,178.69x = 115,041,544.79
5. Step 5: Solve for x
   x = 115,041,544.79/14,178.69
6. Step 6: Final answer
   x = 8,113.69