Finding the Fourth Proportional to 8,117.38, 12,174.72 and 2,272.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,117.38 : 12,174.72 = 2,272.78 : x
2. Step 2: Convert to fraction form
   8,117.38/12,174.72 = 2,272.78/x
3. Step 3: Cross multiply
   8,117.38x = 12,174.72 × 2,272.78
4. Step 4: Simplify right side
   8,117.38x = 27,670,460.12
5. Step 5: Solve for x
   x = 27,670,460.12/8,117.38
6. Step 6: Final answer
   x = 3,408.79