Finding the Fourth Proportional to 6,109.58, 8,431.38 and 3,456.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.58 : 8,431.38 = 3,456.86 : x
2. Step 2: Convert to fraction form
   6,109.58/8,431.38 = 3,456.86/x
3. Step 3: Cross multiply
   6,109.58x = 8,431.38 × 3,456.86
4. Step 4: Simplify right side
   6,109.58x = 29,146,100.27
5. Step 5: Solve for x
   x = 29,146,100.27/6,109.58
6. Step 6: Final answer
   x = 4,770.56