Finding the Fourth Proportional to 12,742.38, 17,584.20 and 7,076.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.38 : 17,584.20 = 7,076.81 : x
2. Step 2: Convert to fraction form
   12,742.38/17,584.20 = 7,076.81/x
3. Step 3: Cross multiply
   12,742.38x = 17,584.20 × 7,076.81
4. Step 4: Simplify right side
   12,742.38x = 124,440,042.40
5. Step 5: Solve for x
   x = 124,440,042.40/12,742.38
6. Step 6: Final answer
   x = 9,765.84