Finding the Fourth Proportional to 8,740, 12,061.20 and 5,016.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,740 : 12,061.20 = 5,016.48 : x
2. Step 2: Convert to fraction form
   8,740/12,061.20 = 5,016.48/x
3. Step 3: Cross multiply
   8,740x = 12,061.20 × 5,016.48
4. Step 4: Simplify right side
   8,740x = 60,504,768.58
5. Step 5: Solve for x
   x = 60,504,768.58/8,740
6. Step 6: Final answer
   x = 6,922.74