Finding the Fourth Proportional to 10,929.39, 16,401.98 and 4,351.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,929.39 : 16,401.98 = 4,351.78 : x
2. Step 2: Convert to fraction form
   10,929.39/16,401.98 = 4,351.78/x
3. Step 3: Cross multiply
   10,929.39x = 16,401.98 × 4,351.78
4. Step 4: Simplify right side
   10,929.39x = 71,377,808.52
5. Step 5: Solve for x
   x = 71,377,808.52/10,929.39
6. Step 6: Final answer
   x = 6,530.81