Finding the Fourth Proportional to 10,167.78, 14,029.68 and 5,691.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,167.78 : 14,029.68 = 5,691.54 : x
2. Step 2: Convert to fraction form
   10,167.78/14,029.68 = 5,691.54/x
3. Step 3: Cross multiply
   10,167.78x = 14,029.68 × 5,691.54
4. Step 4: Simplify right side
   10,167.78x = 79,850,484.91
5. Step 5: Solve for x
   x = 79,850,484.91/10,167.78
6. Step 6: Final answer
   x = 7,853.29