Finding the Fourth Proportional to 22,288.68, 30,756.96 and 12,215.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.68 : 30,756.96 = 12,215.34 : x
2. Step 2: Convert to fraction form
   22,288.68/30,756.96 = 12,215.34/x
3. Step 3: Cross multiply
   22,288.68x = 30,756.96 × 12,215.34
4. Step 4: Simplify right side
   22,288.68x = 375,706,723.77
5. Step 5: Solve for x
   x = 375,706,723.77/22,288.68
6. Step 6: Final answer
   x = 16,856.39