Finding the Fourth Proportional to 9,500.81, 13,126.37 and 8,099.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,500.81 : 13,126.37 = 8,099.31 : x
2. Step 2: Convert to fraction form
   9,500.81/13,126.37 = 8,099.31/x
3. Step 3: Cross multiply
   9,500.81x = 13,126.37 × 8,099.31
4. Step 4: Simplify right side
   9,500.81x = 106,314,499.31
5. Step 5: Solve for x
   x = 106,314,499.31/9,500.81
6. Step 6: Final answer
   x = 11,190.05