Finding the Fourth Proportional to 10.47, 15.69 and 10.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10.47 : 15.69 = 10.29 : x
2. Step 2: Convert to fraction form
   10.47/15.69 = 10.29/x
3. Step 3: Cross multiply
   10.47x = 15.69 × 10.29
4. Step 4: Simplify right side
   10.47x = 161.55
5. Step 5: Solve for x
   x = 161.55/10.47
6. Step 6: Final answer
   x = 15.42