Finding the Fourth Proportional to 22,308.50, 30,786.09 and 12,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,308.50 : 30,786.09 = 12,372.50 : x
2. Step 2: Convert to fraction form
   22,308.50/30,786.09 = 12,372.50/x
3. Step 3: Cross multiply
   22,308.50x = 30,786.09 × 12,372.50
4. Step 4: Simplify right side
   22,308.50x = 380,900,898.53
5. Step 5: Solve for x
   x = 380,900,898.53/22,308.50
6. Step 6: Final answer
   x = 17,074.25