Finding the Fourth Proportional to 11,332.94, 16,987.72 and 8,205.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,332.94 : 16,987.72 = 8,205.18 : x
2. Step 2: Convert to fraction form
   11,332.94/16,987.72 = 8,205.18/x
3. Step 3: Cross multiply
   11,332.94x = 16,987.72 × 8,205.18
4. Step 4: Simplify right side
   11,332.94x = 139,387,300.39
5. Step 5: Solve for x
   x = 139,387,300.39/11,332.94
6. Step 6: Final answer
   x = 12,299.31