Finding the Fourth Proportional to 10,004.92, 15,016.56 and 5,078.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,004.92 : 15,016.56 = 5,078.09 : x
2. Step 2: Convert to fraction form
   10,004.92/15,016.56 = 5,078.09/x
3. Step 3: Cross multiply
   10,004.92x = 15,016.56 × 5,078.09
4. Step 4: Simplify right side
   10,004.92x = 76,255,504.52
5. Step 5: Solve for x
   x = 76,255,504.52/10,004.92
6. Step 6: Final answer
   x = 7,621.80