Finding the Fourth Proportional to 10,215.83, 15,321.94 and 2,719.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.83 : 15,321.94 = 2,719.44 : x
2. Step 2: Convert to fraction form
   10,215.83/15,321.94 = 2,719.44/x
3. Step 3: Cross multiply
   10,215.83x = 15,321.94 × 2,719.44
4. Step 4: Simplify right side
   10,215.83x = 41,667,089.72
5. Step 5: Solve for x
   x = 41,667,089.72/10,215.83
6. Step 6: Final answer
   x = 4,078.68