Finding the Fourth Proportional to 7,015.98, 9,678.71 and 4,181.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,015.98 : 9,678.71 = 4,181.72 : x
2. Step 2: Convert to fraction form
   7,015.98/9,678.71 = 4,181.72/x
3. Step 3: Cross multiply
   7,015.98x = 9,678.71 × 4,181.72
4. Step 4: Simplify right side
   7,015.98x = 40,473,689.83
5. Step 5: Solve for x
   x = 40,473,689.83/7,015.98
6. Step 6: Final answer
   x = 5,768.79