Finding the Fourth Proportional to 10,678.25, 16,031.96 and 7,170.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,678.25 : 16,031.96 = 7,170.54 : x
2. Step 2: Convert to fraction form
   10,678.25/16,031.96 = 7,170.54/x
3. Step 3: Cross multiply
   10,678.25x = 16,031.96 × 7,170.54
4. Step 4: Simplify right side
   10,678.25x = 114,957,774.61
5. Step 5: Solve for x
   x = 114,957,774.61/10,678.25
6. Step 6: Final answer
   x = 10,765.61