Finding the Fourth Proportional to 10,426.71, 14,395.56 and 9,305.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,426.71 : 14,395.56 = 9,305.73 : x
2. Step 2: Convert to fraction form
   10,426.71/14,395.56 = 9,305.73/x
3. Step 3: Cross multiply
   10,426.71x = 14,395.56 × 9,305.73
4. Step 4: Simplify right side
   10,426.71x = 133,961,194.56
5. Step 5: Solve for x
   x = 133,961,194.56/10,426.71
6. Step 6: Final answer
   x = 12,847.89