Finding the Fourth Proportional to 5,776.54, 7,971.61 and 3,123.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,776.54 : 7,971.61 = 3,123.96 : x
2. Step 2: Convert to fraction form
   5,776.54/7,971.61 = 3,123.96/x
3. Step 3: Cross multiply
   5,776.54x = 7,971.61 × 3,123.96
4. Step 4: Simplify right side
   5,776.54x = 24,902,990.78
5. Step 5: Solve for x
   x = 24,902,990.78/5,776.54
6. Step 6: Final answer
   x = 4,311.06