Finding the Fourth Proportional to 8,099.59, 12,131.77 and 3,930.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,099.59 : 12,131.77 = 3,930.81 : x
2. Step 2: Convert to fraction form
   8,099.59/12,131.77 = 3,930.81/x
3. Step 3: Cross multiply
   8,099.59x = 12,131.77 × 3,930.81
4. Step 4: Simplify right side
   8,099.59x = 47,687,682.83
5. Step 5: Solve for x
   x = 47,687,682.83/8,099.59
6. Step 6: Final answer
   x = 5,887.67