Finding the Fourth Proportional to 22,387.32, 30,893.67 and 12,315.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,387.32 : 30,893.67 = 12,315.11 : x
2. Step 2: Convert to fraction form
   22,387.32/30,893.67 = 12,315.11/x
3. Step 3: Cross multiply
   22,387.32x = 30,893.67 × 12,315.11
4. Step 4: Simplify right side
   22,387.32x = 380,458,789.89
5. Step 5: Solve for x
   x = 380,458,789.89/22,387.32
6. Step 6: Final answer
   x = 16,994.39