Finding the Fourth Proportional to 5,162.60, 7,124.28 and 2,804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,162.60 : 7,124.28 = 2,804.72 : x
2. Step 2: Convert to fraction form
   5,162.60/7,124.28 = 2,804.72/x
3. Step 3: Cross multiply
   5,162.60x = 7,124.28 × 2,804.72
4. Step 4: Simplify right side
   5,162.60x = 19,981,610.60
5. Step 5: Solve for x
   x = 19,981,610.60/5,162.60
6. Step 6: Final answer
   x = 3,870.45