Finding the Fourth Proportional to 10,995.20, 16,495.24 and 5,451.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,995.20 : 16,495.24 = 5,451.56 : x
2. Step 2: Convert to fraction form
   10,995.20/16,495.24 = 5,451.56/x
3. Step 3: Cross multiply
   10,995.20x = 16,495.24 × 5,451.56
4. Step 4: Simplify right side
   10,995.20x = 89,924,790.57
5. Step 5: Solve for x
   x = 89,924,790.57/10,995.20
6. Step 6: Final answer
   x = 8,178.55