Finding the Fourth Proportional to 9,066.72, 12,512.34 and 5,087.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,066.72 : 12,512.34 = 5,087.79 : x
2. Step 2: Convert to fraction form
   9,066.72/12,512.34 = 5,087.79/x
3. Step 3: Cross multiply
   9,066.72x = 12,512.34 × 5,087.79
4. Step 4: Simplify right side
   9,066.72x = 63,660,158.33
5. Step 5: Solve for x
   x = 63,660,158.33/9,066.72
6. Step 6: Final answer
   x = 7,021.30