Finding the Fourth Proportional to 8,667.29, 11,960.78 and 4,688.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.29 : 11,960.78 = 4,688.32 : x
2. Step 2: Convert to fraction form
   8,667.29/11,960.78 = 4,688.32/x
3. Step 3: Cross multiply
   8,667.29x = 11,960.78 × 4,688.32
4. Step 4: Simplify right side
   8,667.29x = 56,075,964.09
5. Step 5: Solve for x
   x = 56,075,964.09/8,667.29
6. Step 6: Final answer
   x = 6,469.84