Finding the Fourth Proportional to 13,039.56, 19,562.94 and 5,144.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.56 : 19,562.94 = 5,144.04 : x
2. Step 2: Convert to fraction form
   13,039.56/19,562.94 = 5,144.04/x
3. Step 3: Cross multiply
   13,039.56x = 19,562.94 × 5,144.04
4. Step 4: Simplify right side
   13,039.56x = 100,632,545.88
5. Step 5: Solve for x
   x = 100,632,545.88/13,039.56
6. Step 6: Final answer
   x = 7,717.48