Finding the Fourth Proportional to 5,123.84, 7,071.23 and 2,885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.84 : 7,071.23 = 2,885.50 : x
2. Step 2: Convert to fraction form
   5,123.84/7,071.23 = 2,885.50/x
3. Step 3: Cross multiply
   5,123.84x = 7,071.23 × 2,885.50
4. Step 4: Simplify right side
   5,123.84x = 20,404,002.06
5. Step 5: Solve for x
   x = 20,404,002.06/5,123.84
6. Step 6: Final answer
   x = 3,982.17