Finding the Fourth Proportional to 22,238.47, 30,688.62 and 12,166.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.47 : 30,688.62 = 12,166.88 : x
2. Step 2: Convert to fraction form
   22,238.47/30,688.62 = 12,166.88/x
3. Step 3: Cross multiply
   22,238.47x = 30,688.62 × 12,166.88
4. Step 4: Simplify right side
   22,238.47x = 373,384,756.91
5. Step 5: Solve for x
   x = 373,384,756.91/22,238.47
6. Step 6: Final answer
   x = 16,790.04