Finding the Fourth Proportional to 22,380.82, 30,885.56 and 12,309.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,380.82 : 30,885.56 = 12,309.96 : x
2. Step 2: Convert to fraction form
   22,380.82/30,885.56 = 12,309.96/x
3. Step 3: Cross multiply
   22,380.82x = 30,885.56 × 12,309.96
4. Step 4: Simplify right side
   22,380.82x = 380,200,008.18
5. Step 5: Solve for x
   x = 380,200,008.18/22,380.82
6. Step 6: Final answer
   x = 16,987.76