Finding the Fourth Proportional to 11,439.26, 17,162.40 and 4,865.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,439.26 : 17,162.40 = 4,865.30 : x
2. Step 2: Convert to fraction form
   11,439.26/17,162.40 = 4,865.30/x
3. Step 3: Cross multiply
   11,439.26x = 17,162.40 × 4,865.30
4. Step 4: Simplify right side
   11,439.26x = 83,500,224.72
5. Step 5: Solve for x
   x = 83,500,224.72/11,439.26
6. Step 6: Final answer
   x = 7,299.44