Finding the Fourth Proportional to 12,764.72, 17,615.22 and 7,175.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,764.72 : 17,615.22 = 7,175.72 : x
2. Step 2: Convert to fraction form
   12,764.72/17,615.22 = 7,175.72/x
3. Step 3: Cross multiply
   12,764.72x = 17,615.22 × 7,175.72
4. Step 4: Simplify right side
   12,764.72x = 126,401,886.46
5. Step 5: Solve for x
   x = 126,401,886.46/12,764.72
6. Step 6: Final answer
   x = 9,902.44