Finding the Fourth Proportional to 5,165.04, 7,127.89 and 2,807.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,165.04 : 7,127.89 = 2,807.18 : x
2. Step 2: Convert to fraction form
   5,165.04/7,127.89 = 2,807.18/x
3. Step 3: Cross multiply
   5,165.04x = 7,127.89 × 2,807.18
4. Step 4: Simplify right side
   5,165.04x = 20,009,270.25
5. Step 5: Solve for x
   x = 20,009,270.25/5,165.04
6. Step 6: Final answer
   x = 3,873.98