Finding the Fourth Proportional to 5,111.34, 7,053.57 and 3,015.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.34 : 7,053.57 = 3,015.42 : x
2. Step 2: Convert to fraction form
   5,111.34/7,053.57 = 3,015.42/x
3. Step 3: Cross multiply
   5,111.34x = 7,053.57 × 3,015.42
4. Step 4: Simplify right side
   5,111.34x = 21,269,476.05
5. Step 5: Solve for x
   x = 21,269,476.05/5,111.34
6. Step 6: Final answer
   x = 4,161.23