Finding the Fourth Proportional to 10,014.69, 15,020.72 and 2,619.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,014.69 : 15,020.72 = 2,619.72 : x
2. Step 2: Convert to fraction form
   10,014.69/15,020.72 = 2,619.72/x
3. Step 3: Cross multiply
   10,014.69x = 15,020.72 × 2,619.72
4. Step 4: Simplify right side
   10,014.69x = 39,350,005.49
5. Step 5: Solve for x
   x = 39,350,005.49/10,014.69
6. Step 6: Final answer
   x = 3,929.23