Finding the Fourth Proportional to 5,161.96, 7,123.49 and 2,804.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,161.96 : 7,123.49 = 2,804.10 : x
2. Step 2: Convert to fraction form
   5,161.96/7,123.49 = 2,804.10/x
3. Step 3: Cross multiply
   5,161.96x = 7,123.49 × 2,804.10
4. Step 4: Simplify right side
   5,161.96x = 19,974,978.31
5. Step 5: Solve for x
   x = 19,974,978.31/5,161.96
6. Step 6: Final answer
   x = 3,869.65