Finding the Fourth Proportional to 5,123.82, 7,689.38 and 3,954.99

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.82 : 7,689.38 = 3,954.99 : x
2. Step 2: Convert to fraction form
   5,123.82/7,689.38 = 3,954.99/x
3. Step 3: Cross multiply
   5,123.82x = 7,689.38 × 3,954.99
4. Step 4: Simplify right side
   5,123.82x = 30,411,401.23
5. Step 5: Solve for x
   x = 30,411,401.23/5,123.82
6. Step 6: Final answer
   x = 5,935.30