Finding the Fourth Proportional to 8,960.77, 12,364.88 and 5,424.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.77 : 12,364.88 = 5,424.51 : x
2. Step 2: Convert to fraction form
   8,960.77/12,364.88 = 5,424.51/x
3. Step 3: Cross multiply
   8,960.77x = 12,364.88 × 5,424.51
4. Step 4: Simplify right side
   8,960.77x = 67,073,388.09
5. Step 5: Solve for x
   x = 67,073,388.09/8,960.77
6. Step 6: Final answer
   x = 7,485.23