Finding the Fourth Proportional to 10,819.98, 16,231.61 and 3,421.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,819.98 : 16,231.61 = 3,421.98 : x
2. Step 2: Convert to fraction form
   10,819.98/16,231.61 = 3,421.98/x
3. Step 3: Cross multiply
   10,819.98x = 16,231.61 × 3,421.98
4. Step 4: Simplify right side
   10,819.98x = 55,544,244.79
5. Step 5: Solve for x
   x = 55,544,244.79/10,819.98
6. Step 6: Final answer
   x = 5,133.49