Finding the Fourth Proportional to 22,360.38, 30,856.67 and 12,288.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,360.38 : 30,856.67 = 12,288.80 : x
2. Step 2: Convert to fraction form
   22,360.38/30,856.67 = 12,288.80/x
3. Step 3: Cross multiply
   22,360.38x = 30,856.67 × 12,288.80
4. Step 4: Simplify right side
   22,360.38x = 379,191,499.25
5. Step 5: Solve for x
   x = 379,191,499.25/22,360.38
6. Step 6: Final answer
   x = 16,958.19