Finding the Fourth Proportional to 6,109.28, 8,430.48 and 3,456.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.28 : 8,430.48 = 3,456.56 : x
2. Step 2: Convert to fraction form
   6,109.28/8,430.48 = 3,456.56/x
3. Step 3: Cross multiply
   6,109.28x = 8,430.48 × 3,456.56
4. Step 4: Simplify right side
   6,109.28x = 29,140,459.95
5. Step 5: Solve for x
   x = 29,140,459.95/6,109.28
6. Step 6: Final answer
   x = 4,769.87