Finding the Fourth Proportional to 6,111.63, 8,434.23 and 3,317.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.63 : 8,434.23 = 3,317.31 : x
2. Step 2: Convert to fraction form
   6,111.63/8,434.23 = 3,317.31/x
3. Step 3: Cross multiply
   6,111.63x = 8,434.23 × 3,317.31
4. Step 4: Simplify right side
   6,111.63x = 27,978,896.76
5. Step 5: Solve for x
   x = 27,978,896.76/6,111.63
6. Step 6: Final answer
   x = 4,577.98