Finding the Fourth Proportional to 5,072.40, 7,002.72 and 3,185.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,072.40 : 7,002.72 = 3,185.94 : x
2. Step 2: Convert to fraction form
   5,072.40/7,002.72 = 3,185.94/x
3. Step 3: Cross multiply
   5,072.40x = 7,002.72 × 3,185.94
4. Step 4: Simplify right side
   5,072.40x = 22,310,245.76
5. Step 5: Solve for x
   x = 22,310,245.76/5,072.40
6. Step 6: Final answer
   x = 4,398.36