Finding the Fourth Proportional to 7,174.78, 9,901.29 and 4,342.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,174.78 : 9,901.29 = 4,342.12 : x
2. Step 2: Convert to fraction form
   7,174.78/9,901.29 = 4,342.12/x
3. Step 3: Cross multiply
   7,174.78x = 9,901.29 × 4,342.12
4. Step 4: Simplify right side
   7,174.78x = 42,992,589.33
5. Step 5: Solve for x
   x = 42,992,589.33/7,174.78
6. Step 6: Final answer
   x = 5,992.18