Finding the Fourth Proportional to 10,681.12, 14,722.32 and 7,143.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,681.12 : 14,722.32 = 7,143.04 : x
2. Step 2: Convert to fraction form
   10,681.12/14,722.32 = 7,143.04/x
3. Step 3: Cross multiply
   10,681.12x = 14,722.32 × 7,143.04
4. Step 4: Simplify right side
   10,681.12x = 105,162,120.65
5. Step 5: Solve for x
   x = 105,162,120.65/10,681.12
6. Step 6: Final answer
   x = 9,845.61