Finding the Fourth Proportional to 8,031.42, 12,038.49 and 3,099.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,031.42 : 12,038.49 = 3,099.60 : x
2. Step 2: Convert to fraction form
   8,031.42/12,038.49 = 3,099.60/x
3. Step 3: Cross multiply
   8,031.42x = 12,038.49 × 3,099.60
4. Step 4: Simplify right side
   8,031.42x = 37,314,503.60
5. Step 5: Solve for x
   x = 37,314,503.60/8,031.42
6. Step 6: Final answer
   x = 4,646.07