Finding the Fourth Proportional to 11,439.27, 17,153.42 and 4,861.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,439.27 : 17,153.42 = 4,861.89 : x
2. Step 2: Convert to fraction form
   11,439.27/17,153.42 = 4,861.89/x
3. Step 3: Cross multiply
   11,439.27x = 17,153.42 × 4,861.89
4. Step 4: Simplify right side
   11,439.27x = 83,398,016.85
5. Step 5: Solve for x
   x = 83,398,016.85/11,439.27
6. Step 6: Final answer
   x = 7,290.50