Finding the Fourth Proportional to 11,325.48, 16,974.24 and 8,216.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,325.48 : 16,974.24 = 8,216.16 : x
2. Step 2: Convert to fraction form
   11,325.48/16,974.24 = 8,216.16/x
3. Step 3: Cross multiply
   11,325.48x = 16,974.24 × 8,216.16
4. Step 4: Simplify right side
   11,325.48x = 139,463,071.72
5. Step 5: Solve for x
   x = 139,463,071.72/11,325.48
6. Step 6: Final answer
   x = 12,314.10