Finding the Fourth Proportional to 12,222.91, 18,334.03 and 5,555.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,222.91 : 18,334.03 = 5,555.30 : x
2. Step 2: Convert to fraction form
   12,222.91/18,334.03 = 5,555.30/x
3. Step 3: Cross multiply
   12,222.91x = 18,334.03 × 5,555.30
4. Step 4: Simplify right side
   12,222.91x = 101,851,036.86
5. Step 5: Solve for x
   x = 101,851,036.86/12,222.91
6. Step 6: Final answer
   x = 8,332.80