Finding the Fourth Proportional to 91.69, 137.60 and 37.58

Step by Step Solution

1. Step 1: Write the proportion equation
   91.69 : 137.60 = 37.58 : x
2. Step 2: Convert to fraction form
   91.69/137.60 = 37.58/x
3. Step 3: Cross multiply
   91.69x = 137.60 × 37.58
4. Step 4: Simplify right side
   91.69x = 5,171.16
5. Step 5: Solve for x
   x = 5,171.16/91.69
6. Step 6: Final answer
   x = 56.40