Finding the Fourth Proportional to 22,359.84, 30,856.86 and 12,289.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.84 : 30,856.86 = 12,289.38 : x
2. Step 2: Convert to fraction form
   22,359.84/30,856.86 = 12,289.38/x
3. Step 3: Cross multiply
   22,359.84x = 30,856.86 × 12,289.38
4. Step 4: Simplify right side
   22,359.84x = 379,211,678.15
5. Step 5: Solve for x
   x = 379,211,678.15/22,359.84
6. Step 6: Final answer
   x = 16,959.50