Finding the Fourth Proportional to 7,072.72, 10,610.28 and 3,179.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.72 : 10,610.28 = 3,179.86 : x
2. Step 2: Convert to fraction form
   7,072.72/10,610.28 = 3,179.86/x
3. Step 3: Cross multiply
   7,072.72x = 10,610.28 × 3,179.86
4. Step 4: Simplify right side
   7,072.72x = 33,739,204.96
5. Step 5: Solve for x
   x = 33,739,204.96/7,072.72
6. Step 6: Final answer
   x = 4,770.33