Finding the Fourth Proportional to 8,069.78, 12,103.30 and 2,146.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,069.78 : 12,103.30 = 2,146.76 : x
2. Step 2: Convert to fraction form
   8,069.78/12,103.30 = 2,146.76/x
3. Step 3: Cross multiply
   8,069.78x = 12,103.30 × 2,146.76
4. Step 4: Simplify right side
   8,069.78x = 25,982,880.31
5. Step 5: Solve for x
   x = 25,982,880.31/8,069.78
6. Step 6: Final answer
   x = 3,219.78