Finding the Fourth Proportional to 16,511.27, 22,780.17 and 9,340.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,511.27 : 22,780.17 = 9,340.50 : x
2. Step 2: Convert to fraction form
   16,511.27/22,780.17 = 9,340.50/x
3. Step 3: Cross multiply
   16,511.27x = 22,780.17 × 9,340.50
4. Step 4: Simplify right side
   16,511.27x = 212,778,063.98
5. Step 5: Solve for x
   x = 212,778,063.98/16,511.27
6. Step 6: Final answer
   x = 12,886.84