Finding the Fourth Proportional to 8,667.11, 11,960.61 and 4,891.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.11 : 11,960.61 = 4,891.08 : x
2. Step 2: Convert to fraction form
   8,667.11/11,960.61 = 4,891.08/x
3. Step 3: Cross multiply
   8,667.11x = 11,960.61 × 4,891.08
4. Step 4: Simplify right side
   8,667.11x = 58,500,240.56
5. Step 5: Solve for x
   x = 58,500,240.56/8,667.11
6. Step 6: Final answer
   x = 6,749.69