Finding the Fourth Proportional to 22,388.86, 30,896.20 and 12,316.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,388.86 : 30,896.20 = 12,316.71 : x
2. Step 2: Convert to fraction form
   22,388.86/30,896.20 = 12,316.71/x
3. Step 3: Cross multiply
   22,388.86x = 30,896.20 × 12,316.71
4. Step 4: Simplify right side
   22,388.86x = 380,539,535.50
5. Step 5: Solve for x
   x = 380,539,535.50/22,388.86
6. Step 6: Final answer
   x = 16,996.83