Finding the Fourth Proportional to 4,321.72, 5,961.89 and 4,154.05

Step by Step Solution

1. Step 1: Write the proportion equation
   4,321.72 : 5,961.89 = 4,154.05 : x
2. Step 2: Convert to fraction form
   4,321.72/5,961.89 = 4,154.05/x
3. Step 3: Cross multiply
   4,321.72x = 5,961.89 × 4,154.05
4. Step 4: Simplify right side
   4,321.72x = 24,765,984.63
5. Step 5: Solve for x
   x = 24,765,984.63/4,321.72
6. Step 6: Final answer
   x = 5,730.59