Finding the Fourth Proportional to 7,457.72, 10,286.06 and 7,126.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,457.72 : 10,286.06 = 7,126.84 : x
2. Step 2: Convert to fraction form
   7,457.72/10,286.06 = 7,126.84/x
3. Step 3: Cross multiply
   7,457.72x = 10,286.06 × 7,126.84
4. Step 4: Simplify right side
   7,457.72x = 73,307,103.85
5. Step 5: Solve for x
   x = 73,307,103.85/7,457.72
6. Step 6: Final answer
   x = 9,829.69