Finding the Fourth Proportional to 8,087.20, 12,111.60 and 4,976.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,087.20 : 12,111.60 = 4,976.80 : x
2. Step 2: Convert to fraction form
   8,087.20/12,111.60 = 4,976.80/x
3. Step 3: Cross multiply
   8,087.20x = 12,111.60 × 4,976.80
4. Step 4: Simplify right side
   8,087.20x = 60,277,010.88
5. Step 5: Solve for x
   x = 60,277,010.88/8,087.20
6. Step 6: Final answer
   x = 7,453.38