Finding the Fourth Proportional to 8,031.07, 12,047.15 and 3,100.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,031.07 : 12,047.15 = 3,100.75 : x
2. Step 2: Convert to fraction form
   8,031.07/12,047.15 = 3,100.75/x
3. Step 3: Cross multiply
   8,031.07x = 12,047.15 × 3,100.75
4. Step 4: Simplify right side
   8,031.07x = 37,355,200.36
5. Step 5: Solve for x
   x = 37,355,200.36/8,031.07
6. Step 6: Final answer
   x = 4,651.34