Finding the Fourth Proportional to 10,997.48, 16,491.72 and 5,448.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.48 : 16,491.72 = 5,448.80 : x
2. Step 2: Convert to fraction form
   10,997.48/16,491.72 = 5,448.80/x
3. Step 3: Cross multiply
   10,997.48x = 16,491.72 × 5,448.80
4. Step 4: Simplify right side
   10,997.48x = 89,860,083.94
5. Step 5: Solve for x
   x = 89,860,083.94/10,997.48
6. Step 6: Final answer
   x = 8,170.97