Finding the Fourth Proportional to 5,507.38, 8,262.69 and 2,218.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,507.38 : 8,262.69 = 2,218.78 : x
2. Step 2: Convert to fraction form
   5,507.38/8,262.69 = 2,218.78/x
3. Step 3: Cross multiply
   5,507.38x = 8,262.69 × 2,218.78
4. Step 4: Simplify right side
   5,507.38x = 18,333,091.32
5. Step 5: Solve for x
   x = 18,333,091.32/5,507.38
6. Step 6: Final answer
   x = 3,328.82