Finding the Fourth Proportional to 8,178.80, 12,268.12 and 3,494.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,178.80 : 12,268.12 = 3,494.82 : x
2. Step 2: Convert to fraction form
   8,178.80/12,268.12 = 3,494.82/x
3. Step 3: Cross multiply
   8,178.80x = 12,268.12 × 3,494.82
4. Step 4: Simplify right side
   8,178.80x = 42,874,871.14
5. Step 5: Solve for x
   x = 42,874,871.14/8,178.80
6. Step 6: Final answer
   x = 5,242.20