Finding the Fourth Proportional to 10,956.96, 16,449.57 and 9,406.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956.96 : 16,449.57 = 9,406.94 : x
2. Step 2: Convert to fraction form
   10,956.96/16,449.57 = 9,406.94/x
3. Step 3: Cross multiply
   10,956.96x = 16,449.57 × 9,406.94
4. Step 4: Simplify right side
   10,956.96x = 154,740,035.77
5. Step 5: Solve for x
   x = 154,740,035.77/10,956.96
6. Step 6: Final answer
   x = 14,122.53