Finding the Fourth Proportional to 10,997.20, 16,498.24 and 5,453.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.20 : 16,498.24 = 5,453.56 : x
2. Step 2: Convert to fraction form
   10,997.20/16,498.24 = 5,453.56/x
3. Step 3: Cross multiply
   10,997.20x = 16,498.24 × 5,453.56
4. Step 4: Simplify right side
   10,997.20x = 89,974,141.73
5. Step 5: Solve for x
   x = 89,974,141.73/10,997.20
6. Step 6: Final answer
   x = 8,181.55