Finding the Fourth Proportional to 5,185.78, 7,156.38 and 2,827.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.78 : 7,156.38 = 2,827.96 : x
2. Step 2: Convert to fraction form
   5,185.78/7,156.38 = 2,827.96/x
3. Step 3: Cross multiply
   5,185.78x = 7,156.38 × 2,827.96
4. Step 4: Simplify right side
   5,185.78x = 20,237,956.38
5. Step 5: Solve for x
   x = 20,237,956.38/5,185.78
6. Step 6: Final answer
   x = 3,902.59