Finding the Fourth Proportional to 16,285.63, 22,449.67 and 12,742.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,285.63 : 22,449.67 = 12,742.69 : x
2. Step 2: Convert to fraction form
   16,285.63/22,449.67 = 12,742.69/x
3. Step 3: Cross multiply
   16,285.63x = 22,449.67 × 12,742.69
4. Step 4: Simplify right side
   16,285.63x = 286,069,185.41
5. Step 5: Solve for x
   x = 286,069,185.41/16,285.63
6. Step 6: Final answer
   x = 17,565.74