Finding the Fourth Proportional to 8,764.24, 12,091.20 and 5,401.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.24 : 12,091.20 = 5,401.20 : x
2. Step 2: Convert to fraction form
   8,764.24/12,091.20 = 5,401.20/x
3. Step 3: Cross multiply
   8,764.24x = 12,091.20 × 5,401.20
4. Step 4: Simplify right side
   8,764.24x = 65,306,962.43
5. Step 5: Solve for x
   x = 65,306,962.43/8,764.24
6. Step 6: Final answer
   x = 7,451.53