Finding the Fourth Proportional to 10,619.57, 15,930.27 and 2,828.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,619.57 : 15,930.27 = 2,828.39 : x
2. Step 2: Convert to fraction form
   10,619.57/15,930.27 = 2,828.39/x
3. Step 3: Cross multiply
   10,619.57x = 15,930.27 × 2,828.39
4. Step 4: Simplify right side
   10,619.57x = 45,057,016.37
5. Step 5: Solve for x
   x = 45,057,016.37/10,619.57
6. Step 6: Final answer
   x = 4,242.83