Finding the Fourth Proportional to 8,039.60, 12,055.08 and 2,490.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,039.60 : 12,055.08 = 2,490.56 : x
2. Step 2: Convert to fraction form
   8,039.60/12,055.08 = 2,490.56/x
3. Step 3: Cross multiply
   8,039.60x = 12,055.08 × 2,490.56
4. Step 4: Simplify right side
   8,039.60x = 30,023,900.04
5. Step 5: Solve for x
   x = 30,023,900.04/8,039.60
6. Step 6: Final answer
   x = 3,734.50