Finding the Fourth Proportional to 5,111.69, 7,054.20 and 2,873.66

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.69 : 7,054.20 = 2,873.66 : x
2. Step 2: Convert to fraction form
   5,111.69/7,054.20 = 2,873.66/x
3. Step 3: Cross multiply
   5,111.69x = 7,054.20 × 2,873.66
4. Step 4: Simplify right side
   5,111.69x = 20,271,337.10
5. Step 5: Solve for x
   x = 20,271,337.10/5,111.69
6. Step 6: Final answer
   x = 3,965.69