Finding the Fourth Proportional to 10,143.84, 13,999.04 and 5,667.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.84 : 13,999.04 = 5,667.68 : x
2. Step 2: Convert to fraction form
   10,143.84/13,999.04 = 5,667.68/x
3. Step 3: Cross multiply
   10,143.84x = 13,999.04 × 5,667.68
4. Step 4: Simplify right side
   10,143.84x = 79,342,079.03
5. Step 5: Solve for x
   x = 79,342,079.03/10,143.84
6. Step 6: Final answer
   x = 7,821.70