Finding the Fourth Proportional to 12,005.49, 18,003.67 and 5,763.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005.49 : 18,003.67 = 5,763.73 : x
2. Step 2: Convert to fraction form
   12,005.49/18,003.67 = 5,763.73/x
3. Step 3: Cross multiply
   12,005.49x = 18,003.67 × 5,763.73
4. Step 4: Simplify right side
   12,005.49x = 103,768,292.89
5. Step 5: Solve for x
   x = 103,768,292.89/12,005.49
6. Step 6: Final answer
   x = 8,643.40