Finding the Fourth Proportional to 11.43, 15.78 and 7.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11.43 : 15.78 = 7.34 : x
2. Step 2: Convert to fraction form
   11.43/15.78 = 7.34/x
3. Step 3: Cross multiply
   11.43x = 15.78 × 7.34
4. Step 4: Simplify right side
   11.43x = 115.83
5. Step 5: Solve for x
   x = 115.83/11.43
6. Step 6: Final answer
   x = 10.13