Finding the Fourth Proportional to 22,359.65, 30,856.75 and 12,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.65 : 30,856.75 = 12,287.50 : x
2. Step 2: Convert to fraction form
   22,359.65/30,856.75 = 12,287.50/x
3. Step 3: Cross multiply
   22,359.65x = 30,856.75 × 12,287.50
4. Step 4: Simplify right side
   22,359.65x = 379,152,207.76
5. Step 5: Solve for x
   x = 379,152,207.76/22,359.65
6. Step 6: Final answer
   x = 16,956.99