Finding the Fourth Proportional to 91.34, 136.92 and 37.18

Step by Step Solution

1. Step 1: Write the proportion equation
   91.34 : 136.92 = 37.18 : x
2. Step 2: Convert to fraction form
   91.34/136.92 = 37.18/x
3. Step 3: Cross multiply
   91.34x = 136.92 × 37.18
4. Step 4: Simplify right side
   91.34x = 5,090.69
5. Step 5: Solve for x
   x = 5,090.69/91.34
6. Step 6: Final answer
   x = 55.73