Finding the Fourth Proportional to 11,970.14, 16,520.76 and 9,132.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,970.14 : 16,520.76 = 9,132.16 : x
2. Step 2: Convert to fraction form
   11,970.14/16,520.76 = 9,132.16/x
3. Step 3: Cross multiply
   11,970.14x = 16,520.76 × 9,132.16
4. Step 4: Simplify right side
   11,970.14x = 150,870,223.64
5. Step 5: Solve for x
   x = 150,870,223.64/11,970.14
6. Step 6: Final answer
   x = 12,603.88