Finding the Fourth Proportional to 5,372.91, 7,418.23 and 4,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,372.91 : 7,418.23 = 4,111.72 : x
2. Step 2: Convert to fraction form
   5,372.91/7,418.23 = 4,111.72/x
3. Step 3: Cross multiply
   5,372.91x = 7,418.23 × 4,111.72
4. Step 4: Simplify right side
   5,372.91x = 30,501,684.66
5. Step 5: Solve for x
   x = 30,501,684.66/5,372.91
6. Step 6: Final answer
   x = 5,676.94