Finding the Fourth Proportional to 10.33, 15.37 and 10.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10.33 : 15.37 = 10.31 : x
2. Step 2: Convert to fraction form
   10.33/15.37 = 10.31/x
3. Step 3: Cross multiply
   10.33x = 15.37 × 10.31
4. Step 4: Simplify right side
   10.33x = 158.41
5. Step 5: Solve for x
   x = 158.41/10.33
6. Step 6: Final answer
   x = 15.34