Finding the Fourth Proportional to 8,300.40, 12,452.80 and 2,457.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.40 : 12,452.80 = 2,457.60 : x
2. Step 2: Convert to fraction form
   8,300.40/12,452.80 = 2,457.60/x
3. Step 3: Cross multiply
   8,300.40x = 12,452.80 × 2,457.60
4. Step 4: Simplify right side
   8,300.40x = 30,604,001.28
5. Step 5: Solve for x
   x = 30,604,001.28/8,300.40
6. Step 6: Final answer
   x = 3,687.05