Finding the Fourth Proportional to 8,066.08, 12,102.22 and 3,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,066.08 : 12,102.22 = 3,139.20 : x
2. Step 2: Convert to fraction form
   8,066.08/12,102.22 = 3,139.20/x
3. Step 3: Cross multiply
   8,066.08x = 12,102.22 × 3,139.20
4. Step 4: Simplify right side
   8,066.08x = 37,991,289.02
5. Step 5: Solve for x
   x = 37,991,289.02/8,066.08
6. Step 6: Final answer
   x = 4,710.01