Finding the Fourth Proportional to 22,387.86, 30,894.82 and 12,315.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,387.86 : 30,894.82 = 12,315.71 : x
2. Step 2: Convert to fraction form
   22,387.86/30,894.82 = 12,315.71/x
3. Step 3: Cross multiply
   22,387.86x = 30,894.82 × 12,315.71
4. Step 4: Simplify right side
   22,387.86x = 380,491,690.07
5. Step 5: Solve for x
   x = 380,491,690.07/22,387.86
6. Step 6: Final answer
   x = 16,995.45