Finding the Fourth Proportional to 5,185.81, 7,156.52 and 2,828.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.81 : 7,156.52 = 2,828.04 : x
2. Step 2: Convert to fraction form
   5,185.81/7,156.52 = 2,828.04/x
3. Step 3: Cross multiply
   5,185.81x = 7,156.52 × 2,828.04
4. Step 4: Simplify right side
   5,185.81x = 20,238,924.82
5. Step 5: Solve for x
   x = 20,238,924.82/5,185.81
6. Step 6: Final answer
   x = 3,902.75