Finding the Fourth Proportional to 12,022.59, 18,021.12 and 5,778.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,022.59 : 18,021.12 = 5,778.72 : x
2. Step 2: Convert to fraction form
   12,022.59/18,021.12 = 5,778.72/x
3. Step 3: Cross multiply
   12,022.59x = 18,021.12 × 5,778.72
4. Step 4: Simplify right side
   12,022.59x = 104,139,006.57
5. Step 5: Solve for x
   x = 104,139,006.57/12,022.59
6. Step 6: Final answer
   x = 8,661.94