Finding the Fourth Proportional to 13,496.89, 18,617.54 and 8,709.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,496.89 : 18,617.54 = 8,709.34 : x
2. Step 2: Convert to fraction form
   13,496.89/18,617.54 = 8,709.34/x
3. Step 3: Cross multiply
   13,496.89x = 18,617.54 × 8,709.34
4. Step 4: Simplify right side
   13,496.89x = 162,146,485.82
5. Step 5: Solve for x
   x = 162,146,485.82/13,496.89
6. Step 6: Final answer
   x = 12,013.62