Finding the Fourth Proportional to 16,956.50, 23,399.57 and 9,402.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,956.50 : 23,399.57 = 9,402.76 : x
2. Step 2: Convert to fraction form
   16,956.50/23,399.57 = 9,402.76/x
3. Step 3: Cross multiply
   16,956.50x = 23,399.57 × 9,402.76
4. Step 4: Simplify right side
   16,956.50x = 220,020,540.81
5. Step 5: Solve for x
   x = 220,020,540.81/16,956.50
6. Step 6: Final answer
   x = 12,975.59