Finding the Fourth Proportional to 91.33, 137.01 and 37.21

Step by Step Solution

1. Step 1: Write the proportion equation
   91.33 : 137.01 = 37.21 : x
2. Step 2: Convert to fraction form
   91.33/137.01 = 37.21/x
3. Step 3: Cross multiply
   91.33x = 137.01 × 37.21
4. Step 4: Simplify right side
   91.33x = 5,098.14
5. Step 5: Solve for x
   x = 5,098.14/91.33
6. Step 6: Final answer
   x = 55.82