Finding the Fourth Proportional to 22,381.52, 30,885.62 and 12,309.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,381.52 : 30,885.62 = 12,309.80 : x
2. Step 2: Convert to fraction form
   22,381.52/30,885.62 = 12,309.80/x
3. Step 3: Cross multiply
   22,381.52x = 30,885.62 × 12,309.80
4. Step 4: Simplify right side
   22,381.52x = 380,195,589.10
5. Step 5: Solve for x
   x = 380,195,589.10/22,381.52
6. Step 6: Final answer
   x = 16,987.04