Finding the Fourth Proportional to 12,657.81, 17,469.50 and 9,508.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,657.81 : 17,469.50 = 9,508.53 : x
2. Step 2: Convert to fraction form
   12,657.81/17,469.50 = 9,508.53/x
3. Step 3: Cross multiply
   12,657.81x = 17,469.50 × 9,508.53
4. Step 4: Simplify right side
   12,657.81x = 166,109,217.29
5. Step 5: Solve for x
   x = 166,109,217.29/12,657.81
6. Step 6: Final answer
   x = 13,123.06