Finding the Fourth Proportional to 8,158.86, 12,176.58 and 7,371.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158.86 : 12,176.58 = 7,371.54 : x
2. Step 2: Convert to fraction form
   8,158.86/12,176.58 = 7,371.54/x
3. Step 3: Cross multiply
   8,158.86x = 12,176.58 × 7,371.54
4. Step 4: Simplify right side
   8,158.86x = 89,760,146.53
5. Step 5: Solve for x
   x = 89,760,146.53/8,158.86
6. Step 6: Final answer
   x = 11,001.55