Finding the Fourth Proportional to 22,219.35, 30,662.63 and 12,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,219.35 : 30,662.63 = 12,147.78 : x
2. Step 2: Convert to fraction form
   22,219.35/30,662.63 = 12,147.78/x
3. Step 3: Cross multiply
   22,219.35x = 30,662.63 × 12,147.78
4. Step 4: Simplify right side
   22,219.35x = 372,482,822.72
5. Step 5: Solve for x
   x = 372,482,822.72/22,219.35
6. Step 6: Final answer
   x = 16,763.89