Finding the Fourth Proportional to 8,667.16, 11,960.69 and 4,688.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.16 : 11,960.69 = 4,688.26 : x
2. Step 2: Convert to fraction form
   8,667.16/11,960.69 = 4,688.26/x
3. Step 3: Cross multiply
   8,667.16x = 11,960.69 × 4,688.26
4. Step 4: Simplify right side
   8,667.16x = 56,074,824.50
5. Step 5: Solve for x
   x = 56,074,824.50/8,667.16
6. Step 6: Final answer
   x = 6,469.80