Finding the Fourth Proportional to 8,601.72, 11,855.31 and 7,403.73

Step by Step Solution

1. Step 1: Write the proportion equation
   8,601.72 : 11,855.31 = 7,403.73 : x
2. Step 2: Convert to fraction form
   8,601.72/11,855.31 = 7,403.73/x
3. Step 3: Cross multiply
   8,601.72x = 11,855.31 × 7,403.73
4. Step 4: Simplify right side
   8,601.72x = 87,773,514.31
5. Step 5: Solve for x
   x = 87,773,514.31/8,601.72
6. Step 6: Final answer
   x = 10,204.18