Finding the Fourth Proportional to 12,412.89, 18,622.49 and 3,647.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,412.89 : 18,622.49 = 3,647.84 : x
2. Step 2: Convert to fraction form
   12,412.89/18,622.49 = 3,647.84/x
3. Step 3: Cross multiply
   12,412.89x = 18,622.49 × 3,647.84
4. Step 4: Simplify right side
   12,412.89x = 67,931,752.57
5. Step 5: Solve for x
   x = 67,931,752.57/12,412.89
6. Step 6: Final answer
   x = 5,472.68