Finding the Fourth Proportional to 16,287.34, 22,456.83 and 13,765

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287.34 : 22,456.83 = 13,765 : x
2. Step 2: Convert to fraction form
   16,287.34/22,456.83 = 13,765/x
3. Step 3: Cross multiply
   16,287.34x = 22,456.83 × 13,765
4. Step 4: Simplify right side
   16,287.34x = 309,118,264.95
5. Step 5: Solve for x
   x = 309,118,264.95/16,287.34
6. Step 6: Final answer
   x = 18,979.05