Finding the Fourth Proportional to 8,142.80, 12,216.42 and 3,463.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.80 : 12,216.42 = 3,463.56 : x
2. Step 2: Convert to fraction form
   8,142.80/12,216.42 = 3,463.56/x
3. Step 3: Cross multiply
   8,142.80x = 12,216.42 × 3,463.56
4. Step 4: Simplify right side
   8,142.80x = 42,312,303.66
5. Step 5: Solve for x
   x = 42,312,303.66/8,142.80
6. Step 6: Final answer
   x = 5,196.29