Finding the Fourth Proportional to 8,280.42, 12,420.83 and 2,734.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.42 : 12,420.83 = 2,734.24 : x
2. Step 2: Convert to fraction form
   8,280.42/12,420.83 = 2,734.24/x
3. Step 3: Cross multiply
   8,280.42x = 12,420.83 × 2,734.24
4. Step 4: Simplify right side
   8,280.42x = 33,961,530.22
5. Step 5: Solve for x
   x = 33,961,530.22/8,280.42
6. Step 6: Final answer
   x = 4,101.43