Finding the Fourth Proportional to 11,988, 16,544.88 and 7,020

Step by Step Solution

1. Step 1: Write the proportion equation
   11,988 : 16,544.88 = 7,020 : x
2. Step 2: Convert to fraction form
   11,988/16,544.88 = 7,020/x
3. Step 3: Cross multiply
   11,988x = 16,544.88 × 7,020
4. Step 4: Simplify right side
   11,988x = 116,145,057.60
5. Step 5: Solve for x
   x = 116,145,057.60/11,988
6. Step 6: Final answer
   x = 9,688.44