Finding the Fourth Proportional to 8,065.78, 12,101.60 and 2,519.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,065.78 : 12,101.60 = 2,519.51 : x
2. Step 2: Convert to fraction form
   8,065.78/12,101.60 = 2,519.51/x
3. Step 3: Cross multiply
   8,065.78x = 12,101.60 × 2,519.51
4. Step 4: Simplify right side
   8,065.78x = 30,490,048.01
5. Step 5: Solve for x
   x = 30,490,048.01/8,065.78
6. Step 6: Final answer
   x = 3,780.17