Finding the Fourth Proportional to 8,068.29, 12,099.39 and 3,137.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,068.29 : 12,099.39 = 3,137.31 : x
2. Step 2: Convert to fraction form
   8,068.29/12,099.39 = 3,137.31/x
3. Step 3: Cross multiply
   8,068.29x = 12,099.39 × 3,137.31
4. Step 4: Simplify right side
   8,068.29x = 37,959,537.24
5. Step 5: Solve for x
   x = 37,959,537.24/8,068.29
6. Step 6: Final answer
   x = 4,704.78