Finding the Fourth Proportional to 16,205.10, 22,381.65 and 10,818.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,205.10 : 22,381.65 = 10,818.15 : x
2. Step 2: Convert to fraction form
   16,205.10/22,381.65 = 10,818.15/x
3. Step 3: Cross multiply
   16,205.10x = 22,381.65 × 10,818.15
4. Step 4: Simplify right side
   16,205.10x = 242,128,046.95
5. Step 5: Solve for x
   x = 242,128,046.95/16,205.10
6. Step 6: Final answer
   x = 14,941.48