Finding the Fourth Proportional to 6,111.50, 8,434.05 and 3,317.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.50 : 8,434.05 = 3,317.18 : x
2. Step 2: Convert to fraction form
   6,111.50/8,434.05 = 3,317.18/x
3. Step 3: Cross multiply
   6,111.50x = 8,434.05 × 3,317.18
4. Step 4: Simplify right side
   6,111.50x = 27,977,261.98
5. Step 5: Solve for x
   x = 27,977,261.98/6,111.50
6. Step 6: Final answer
   x = 4,577.81