Finding the Fourth Proportional to 8,131.30, 12,173.19 and 7,353.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.30 : 12,173.19 = 7,353.10 : x
2. Step 2: Convert to fraction form
   8,131.30/12,173.19 = 7,353.10/x
3. Step 3: Cross multiply
   8,131.30x = 12,173.19 × 7,353.10
4. Step 4: Simplify right side
   8,131.30x = 89,510,683.39
5. Step 5: Solve for x
   x = 89,510,683.39/8,131.30
6. Step 6: Final answer
   x = 11,008.16