Finding the Fourth Proportional to 5,111.51, 7,053.48 and 2,872.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.51 : 7,053.48 = 2,872.96 : x
2. Step 2: Convert to fraction form
   5,111.51/7,053.48 = 2,872.96/x
3. Step 3: Cross multiply
   5,111.51x = 7,053.48 × 2,872.96
4. Step 4: Simplify right side
   5,111.51x = 20,264,348.27
5. Step 5: Solve for x
   x = 20,264,348.27/5,111.51
6. Step 6: Final answer
   x = 3,964.46