Finding the Fourth Proportional to 8,667.16, 11,960.69 and 4,891.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.16 : 11,960.69 = 4,891.13 : x
2. Step 2: Convert to fraction form
   8,667.16/11,960.69 = 4,891.13/x
3. Step 3: Cross multiply
   8,667.16x = 11,960.69 × 4,891.13
4. Step 4: Simplify right side
   8,667.16x = 58,501,331.31
5. Step 5: Solve for x
   x = 58,501,331.31/8,667.16
6. Step 6: Final answer
   x = 6,749.77