Finding the Fourth Proportional to 22,219.34, 30,662.62 and 12,147.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,219.34 : 30,662.62 = 12,147.80 : x
2. Step 2: Convert to fraction form
   22,219.34/30,662.62 = 12,147.80/x
3. Step 3: Cross multiply
   22,219.34x = 30,662.62 × 12,147.80
4. Step 4: Simplify right side
   22,219.34x = 372,483,191.55
5. Step 5: Solve for x
   x = 372,483,191.55/22,219.34
6. Step 6: Final answer
   x = 16,763.92