Finding the Fourth Proportional to 8,499.20, 12,744.40 and 2,654.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.20 : 12,744.40 = 2,654.24 : x
2. Step 2: Convert to fraction form
   8,499.20/12,744.40 = 2,654.24/x
3. Step 3: Cross multiply
   8,499.20x = 12,744.40 × 2,654.24
4. Step 4: Simplify right side
   8,499.20x = 33,826,696.26
5. Step 5: Solve for x
   x = 33,826,696.26/8,499.20
6. Step 6: Final answer
   x = 3,979.99