Finding the Fourth Proportional to 8,667.37, 11,956.71 and 5,436.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.37 : 11,956.71 = 5,436.64 : x
2. Step 2: Convert to fraction form
   8,667.37/11,956.71 = 5,436.64/x
3. Step 3: Cross multiply
   8,667.37x = 11,956.71 × 5,436.64
4. Step 4: Simplify right side
   8,667.37x = 65,004,327.85
5. Step 5: Solve for x
   x = 65,004,327.85/8,667.37
6. Step 6: Final answer
   x = 7,499.89