Finding the Fourth Proportional to 16,287.35, 22,465.87 and 12,924.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,287.35 : 22,465.87 = 12,924.86 : x
2. Step 2: Convert to fraction form
   16,287.35/22,465.87 = 12,924.86/x
3. Step 3: Cross multiply
   16,287.35x = 22,465.87 × 12,924.86
4. Step 4: Simplify right side
   16,287.35x = 290,368,079.89
5. Step 5: Solve for x
   x = 290,368,079.89/16,287.35
6. Step 6: Final answer
   x = 17,827.83