Finding the Fourth Proportional to 14,291.72, 19,715.98 and 9,257.61

Step by Step Solution

1. Step 1: Write the proportion equation
   14,291.72 : 19,715.98 = 9,257.61 : x
2. Step 2: Convert to fraction form
   14,291.72/19,715.98 = 9,257.61/x
3. Step 3: Cross multiply
   14,291.72x = 19,715.98 × 9,257.61
4. Step 4: Simplify right side
   14,291.72x = 182,522,853.61
5. Step 5: Solve for x
   x = 182,522,853.61/14,291.72
6. Step 6: Final answer
   x = 12,771.23