Finding the Fourth Proportional to 10,167.72, 14,031.71 and 5,691.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,167.72 : 14,031.71 = 5,691.44 : x
2. Step 2: Convert to fraction form
   10,167.72/14,031.71 = 5,691.44/x
3. Step 3: Cross multiply
   10,167.72x = 14,031.71 × 5,691.44
4. Step 4: Simplify right side
   10,167.72x = 79,860,536.95
5. Step 5: Solve for x
   x = 79,860,536.95/10,167.72
6. Step 6: Final answer
   x = 7,854.32