Finding the Fourth Proportional to 8,911.98, 12,297.15 and 5,328.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,911.98 : 12,297.15 = 5,328.18 : x
2. Step 2: Convert to fraction form
   8,911.98/12,297.15 = 5,328.18/x
3. Step 3: Cross multiply
   8,911.98x = 12,297.15 × 5,328.18
4. Step 4: Simplify right side
   8,911.98x = 65,521,428.69
5. Step 5: Solve for x
   x = 65,521,428.69/8,911.98
6. Step 6: Final answer
   x = 7,352.06