Finding the Fourth Proportional to 8,095.30, 12,139.60 and 2,829.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,095.30 : 12,139.60 = 2,829.20 : x
2. Step 2: Convert to fraction form
   8,095.30/12,139.60 = 2,829.20/x
3. Step 3: Cross multiply
   8,095.30x = 12,139.60 × 2,829.20
4. Step 4: Simplify right side
   8,095.30x = 34,345,356.32
5. Step 5: Solve for x
   x = 34,345,356.32/8,095.30
6. Step 6: Final answer
   x = 4,242.63