Finding the Fourth Proportional to 6,109.56, 8,431.56 and 3,456.54

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.56 : 8,431.56 = 3,456.54 : x
2. Step 2: Convert to fraction form
   6,109.56/8,431.56 = 3,456.54/x
3. Step 3: Cross multiply
   6,109.56x = 8,431.56 × 3,456.54
4. Step 4: Simplify right side
   6,109.56x = 29,144,024.40
5. Step 5: Solve for x
   x = 29,144,024.40/6,109.56
6. Step 6: Final answer
   x = 4,770.23