Finding the Fourth Proportional to 6,111.88, 8,434.57 and 3,317.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.88 : 8,434.57 = 3,317.56 : x
2. Step 2: Convert to fraction form
   6,111.88/8,434.57 = 3,317.56/x
3. Step 3: Cross multiply
   6,111.88x = 8,434.57 × 3,317.56
4. Step 4: Simplify right side
   6,111.88x = 27,982,149.88
5. Step 5: Solve for x
   x = 27,982,149.88/6,111.88
6. Step 6: Final answer
   x = 4,578.32