Finding the Fourth Proportional to 6,456.56, 8,914.20 and 3,974

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.56 : 8,914.20 = 3,974 : x
2. Step 2: Convert to fraction form
   6,456.56/8,914.20 = 3,974/x
3. Step 3: Cross multiply
   6,456.56x = 8,914.20 × 3,974
4. Step 4: Simplify right side
   6,456.56x = 35,425,030.80
5. Step 5: Solve for x
   x = 35,425,030.80/6,456.56
6. Step 6: Final answer
   x = 5,486.67