Finding the Fourth Proportional to 13,031.67, 17,983.08 and 8,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,031.67 : 17,983.08 = 8,256.72 : x
2. Step 2: Convert to fraction form
   13,031.67/17,983.08 = 8,256.72/x
3. Step 3: Cross multiply
   13,031.67x = 17,983.08 × 8,256.72
4. Step 4: Simplify right side
   13,031.67x = 148,481,256.30
5. Step 5: Solve for x
   x = 148,481,256.30/13,031.67
6. Step 6: Final answer
   x = 11,393.88