Finding the Fourth Proportional to 8,262.15, 12,389.19 and 5,764.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,262.15 : 12,389.19 = 5,764.54 : x
2. Step 2: Convert to fraction form
   8,262.15/12,389.19 = 5,764.54/x
3. Step 3: Cross multiply
   8,262.15x = 12,389.19 × 5,764.54
4. Step 4: Simplify right side
   8,262.15x = 71,417,981.32
5. Step 5: Solve for x
   x = 71,417,981.32/8,262.15
6. Step 6: Final answer
   x = 8,643.99