Finding the Fourth Proportional to 3,359.12, 5,014.03 and 3,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,359.12 : 5,014.03 = 3,111.72 : x
2. Step 2: Convert to fraction form
   3,359.12/5,014.03 = 3,111.72/x
3. Step 3: Cross multiply
   3,359.12x = 5,014.03 × 3,111.72
4. Step 4: Simplify right side
   3,359.12x = 15,602,257.43
5. Step 5: Solve for x
   x = 15,602,257.43/3,359.12
6. Step 6: Final answer
   x = 4,644.75