Finding the Fourth Proportional to 5,162.06, 7,123.67 and 2,804.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,162.06 : 7,123.67 = 2,804.20 : x
2. Step 2: Convert to fraction form
   5,162.06/7,123.67 = 2,804.20/x
3. Step 3: Cross multiply
   5,162.06x = 7,123.67 × 2,804.20
4. Step 4: Simplify right side
   5,162.06x = 19,976,159.80
5. Step 5: Solve for x
   x = 19,976,159.80/5,162.06
6. Step 6: Final answer
   x = 3,869.81