Finding the Fourth Proportional to 12,648.49, 18,969.10 and 3,763.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648.49 : 18,969.10 = 3,763.46 : x
2. Step 2: Convert to fraction form
   12,648.49/18,969.10 = 3,763.46/x
3. Step 3: Cross multiply
   12,648.49x = 18,969.10 × 3,763.46
4. Step 4: Simplify right side
   12,648.49x = 71,389,487.10
5. Step 5: Solve for x
   x = 71,389,487.10/12,648.49
6. Step 6: Final answer
   x = 5,644.11