Finding the Fourth Proportional to 22,074.50, 30,462.81 and 12,138.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,074.50 : 30,462.81 = 12,138.50 : x
2. Step 2: Convert to fraction form
   22,074.50/30,462.81 = 12,138.50/x
3. Step 3: Cross multiply
   22,074.50x = 30,462.81 × 12,138.50
4. Step 4: Simplify right side
   22,074.50x = 369,772,819.19
5. Step 5: Solve for x
   x = 369,772,819.19/22,074.50
6. Step 6: Final answer
   x = 16,751.13