Finding the Fourth Proportional to 8,667.96, 11,964.84 and 5,131.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.96 : 11,964.84 = 5,131.16 : x
2. Step 2: Convert to fraction form
   8,667.96/11,964.84 = 5,131.16/x
3. Step 3: Cross multiply
   8,667.96x = 11,964.84 × 5,131.16
4. Step 4: Simplify right side
   8,667.96x = 61,393,508.41
5. Step 5: Solve for x
   x = 61,393,508.41/8,667.96
6. Step 6: Final answer
   x = 7,082.81