Finding the Fourth Proportional to 10,818.52, 16,229.38 and 3,421.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,818.52 : 16,229.38 = 3,421.30 : x
2. Step 2: Convert to fraction form
   10,818.52/16,229.38 = 3,421.30/x
3. Step 3: Cross multiply
   10,818.52x = 16,229.38 × 3,421.30
4. Step 4: Simplify right side
   10,818.52x = 55,525,577.79
5. Step 5: Solve for x
   x = 55,525,577.79/10,818.52
6. Step 6: Final answer
   x = 5,132.46