Finding the Fourth Proportional to 11,222.80, 16,830.15 and 5,674.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,222.80 : 16,830.15 = 5,674.30 : x
2. Step 2: Convert to fraction form
   11,222.80/16,830.15 = 5,674.30/x
3. Step 3: Cross multiply
   11,222.80x = 16,830.15 × 5,674.30
4. Step 4: Simplify right side
   11,222.80x = 95,499,320.15
5. Step 5: Solve for x
   x = 95,499,320.15/11,222.80
6. Step 6: Final answer
   x = 8,509.40