Finding the Fourth Proportional to 8,132.70, 12,185.85 and 7,355.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,132.70 : 12,185.85 = 7,355.10 : x
2. Step 2: Convert to fraction form
   8,132.70/12,185.85 = 7,355.10/x
3. Step 3: Cross multiply
   8,132.70x = 12,185.85 × 7,355.10
4. Step 4: Simplify right side
   8,132.70x = 89,628,145.34
5. Step 5: Solve for x
   x = 89,628,145.34/8,132.70
6. Step 6: Final answer
   x = 11,020.71