Finding the Fourth Proportional to 10,423.71, 14,391.42 and 9,302.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,423.71 : 14,391.42 = 9,302.73 : x
2. Step 2: Convert to fraction form
   10,423.71/14,391.42 = 9,302.73/x
3. Step 3: Cross multiply
   10,423.71x = 14,391.42 × 9,302.73
4. Step 4: Simplify right side
   10,423.71x = 133,879,494.58
5. Step 5: Solve for x
   x = 133,879,494.58/10,423.71
6. Step 6: Final answer
   x = 12,843.75