Finding the Fourth Proportional to 6,109.89, 8,430.64 and 3,456.73

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.89 : 8,430.64 = 3,456.73 : x
2. Step 2: Convert to fraction form
   6,109.89/8,430.64 = 3,456.73/x
3. Step 3: Cross multiply
   6,109.89x = 8,430.64 × 3,456.73
4. Step 4: Simplify right side
   6,109.89x = 29,142,446.21
5. Step 5: Solve for x
   x = 29,142,446.21/6,109.89
6. Step 6: Final answer
   x = 4,769.72