Finding the Fourth Proportional to 16,288.34, 22,458.21 and 13,766

Step by Step Solution

1. Step 1: Write the proportion equation
   16,288.34 : 22,458.21 = 13,766 : x
2. Step 2: Convert to fraction form
   16,288.34/22,458.21 = 13,766/x
3. Step 3: Cross multiply
   16,288.34x = 22,458.21 × 13,766
4. Step 4: Simplify right side
   16,288.34x = 309,159,718.86
5. Step 5: Solve for x
   x = 309,159,718.86/16,288.34
6. Step 6: Final answer
   x = 18,980.43