Finding the Fourth Proportional to 12,462.72, 18,692.64 and 3,228.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,462.72 : 18,692.64 = 3,228.48 : x
2. Step 2: Convert to fraction form
   12,462.72/18,692.64 = 3,228.48/x
3. Step 3: Cross multiply
   12,462.72x = 18,692.64 × 3,228.48
4. Step 4: Simplify right side
   12,462.72x = 60,348,814.39
5. Step 5: Solve for x
   x = 60,348,814.39/12,462.72
6. Step 6: Final answer
   x = 4,842.35