Finding the Fourth Proportional to 9,411.26, 12,987.56 and 5,162.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.26 : 12,987.56 = 5,162.36 : x
2. Step 2: Convert to fraction form
   9,411.26/12,987.56 = 5,162.36/x
3. Step 3: Cross multiply
   9,411.26x = 12,987.56 × 5,162.36
4. Step 4: Simplify right side
   9,411.26x = 67,046,505.62
5. Step 5: Solve for x
   x = 67,046,505.62/9,411.26
6. Step 6: Final answer
   x = 7,124.07