Finding the Fourth Proportional to 12,018.86, 18,006.72 and 7,336.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018.86 : 18,006.72 = 7,336.46 : x
2. Step 2: Convert to fraction form
   12,018.86/18,006.72 = 7,336.46/x
3. Step 3: Cross multiply
   12,018.86x = 18,006.72 × 7,336.46
4. Step 4: Simplify right side
   12,018.86x = 132,105,581.01
5. Step 5: Solve for x
   x = 132,105,581.01/12,018.86
6. Step 6: Final answer
   x = 10,991.52