Finding the Fourth Proportional to 6,112.11, 8,434.72 and 3,317.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,112.11 : 8,434.72 = 3,317.61 : x
2. Step 2: Convert to fraction form
   6,112.11/8,434.72 = 3,317.61/x
3. Step 3: Cross multiply
   6,112.11x = 8,434.72 × 3,317.61
4. Step 4: Simplify right side
   6,112.11x = 27,983,094.83
5. Step 5: Solve for x
   x = 27,983,094.83/6,112.11
6. Step 6: Final answer
   x = 4,578.30