Finding the Fourth Proportional to 22,155.88, 30,575.11 and 12,219.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,155.88 : 30,575.11 = 12,219.88 : x
2. Step 2: Convert to fraction form
   22,155.88/30,575.11 = 12,219.88/x
3. Step 3: Cross multiply
   22,155.88x = 30,575.11 × 12,219.88
4. Step 4: Simplify right side
   22,155.88x = 373,624,022.31
5. Step 5: Solve for x
   x = 373,624,022.31/22,155.88
6. Step 6: Final answer
   x = 16,863.43