Finding the Fourth Proportional to 10,143.69, 13,998.32 and 5,667.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.69 : 13,998.32 = 5,667.61 : x
2. Step 2: Convert to fraction form
   10,143.69/13,998.32 = 5,667.61/x
3. Step 3: Cross multiply
   10,143.69x = 13,998.32 × 5,667.61
4. Step 4: Simplify right side
   10,143.69x = 79,337,018.42
5. Step 5: Solve for x
   x = 79,337,018.42/10,143.69
6. Step 6: Final answer
   x = 7,821.32