Finding the Fourth Proportional to 7,107.68, 10,667.86 and 7,081.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,107.68 : 10,667.86 = 7,081.22 : x
2. Step 2: Convert to fraction form
   7,107.68/10,667.86 = 7,081.22/x
3. Step 3: Cross multiply
   7,107.68x = 10,667.86 × 7,081.22
4. Step 4: Simplify right side
   7,107.68x = 75,541,392.55
5. Step 5: Solve for x
   x = 75,541,392.55/7,107.68
6. Step 6: Final answer
   x = 10,628.14