Finding the Fourth Proportional to 10,143.92, 13,999.27 and 5,667.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.92 : 13,999.27 = 5,667.70 : x
2. Step 2: Convert to fraction form
   10,143.92/13,999.27 = 5,667.70/x
3. Step 3: Cross multiply
   10,143.92x = 13,999.27 × 5,667.70
4. Step 4: Simplify right side
   10,143.92x = 79,343,602.94
5. Step 5: Solve for x
   x = 79,343,602.94/10,143.92
6. Step 6: Final answer
   x = 7,821.79