Finding the Fourth Proportional to 8,667.72, 13,014.54 and 8,365.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.72 : 13,014.54 = 8,365.32 : x
2. Step 2: Convert to fraction form
   8,667.72/13,014.54 = 8,365.32/x
3. Step 3: Cross multiply
   8,667.72x = 13,014.54 × 8,365.32
4. Step 4: Simplify right side
   8,667.72x = 108,870,791.75
5. Step 5: Solve for x
   x = 108,870,791.75/8,667.72
6. Step 6: Final answer
   x = 12,560.49