Finding the Fourth Proportional to 9,165.06, 12,651.30 and 7,176.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,165.06 : 12,651.30 = 7,176.30 : x
2. Step 2: Convert to fraction form
   9,165.06/12,651.30 = 7,176.30/x
3. Step 3: Cross multiply
   9,165.06x = 12,651.30 × 7,176.30
4. Step 4: Simplify right side
   9,165.06x = 90,789,524.19
5. Step 5: Solve for x
   x = 90,789,524.19/9,165.06
6. Step 6: Final answer
   x = 9,906.05