Finding the Fourth Proportional to 5,123.86, 7,071.06 and 2,885.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,123.86 : 7,071.06 = 2,885.82 : x
2. Step 2: Convert to fraction form
   5,123.86/7,071.06 = 2,885.82/x
3. Step 3: Cross multiply
   5,123.86x = 7,071.06 × 2,885.82
4. Step 4: Simplify right side
   5,123.86x = 20,405,806.37
5. Step 5: Solve for x
   x = 20,405,806.37/5,123.86
6. Step 6: Final answer
   x = 3,982.51