Finding the Fourth Proportional to 12,391.50, 17,100.27 and 7,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.50 : 17,100.27 = 7,423.50 : x
2. Step 2: Convert to fraction form
   12,391.50/17,100.27 = 7,423.50/x
3. Step 3: Cross multiply
   12,391.50x = 17,100.27 × 7,423.50
4. Step 4: Simplify right side
   12,391.50x = 126,943,854.35
5. Step 5: Solve for x
   x = 126,943,854.35/12,391.50
6. Step 6: Final answer
   x = 10,244.43