Finding the Fourth Proportional to 22,386.83, 30,894.86 and 12,315.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,386.83 : 30,894.86 = 12,315.09 : x
2. Step 2: Convert to fraction form
   22,386.83/30,894.86 = 12,315.09/x
3. Step 3: Cross multiply
   22,386.83x = 30,894.86 × 12,315.09
4. Step 4: Simplify right side
   22,386.83x = 380,473,012.23
5. Step 5: Solve for x
   x = 380,473,012.23/22,386.83
6. Step 6: Final answer
   x = 16,995.39