Finding the Fourth Proportional to 91.96, 137.99 and 37.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91.96 : 137.99 = 37.89 : x
2. Step 2: Convert to fraction form
   91.96/137.99 = 37.89/x
3. Step 3: Cross multiply
   91.96x = 137.99 × 37.89
4. Step 4: Simplify right side
   91.96x = 5,229.05
5. Step 5: Solve for x
   x = 5,229.05/91.96
6. Step 6: Final answer
   x = 56.86