Finding the Fourth Proportional to 5,072.89, 7,000.96 and 2,920.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,072.89 : 7,000.96 = 2,920.09 : x
2. Step 2: Convert to fraction form
   5,072.89/7,000.96 = 2,920.09/x
3. Step 3: Cross multiply
   5,072.89x = 7,000.96 × 2,920.09
4. Step 4: Simplify right side
   5,072.89x = 20,443,433.29
5. Step 5: Solve for x
   x = 20,443,433.29/5,072.89
6. Step 6: Final answer
   x = 4,029.94