Finding the Fourth Proportional to 91.34, 137.01 and 37.20

Step by Step Solution

1. Step 1: Write the proportion equation
   91.34 : 137.01 = 37.20 : x
2. Step 2: Convert to fraction form
   91.34/137.01 = 37.20/x
3. Step 3: Cross multiply
   91.34x = 137.01 × 37.20
4. Step 4: Simplify right side
   91.34x = 5,096.77
5. Step 5: Solve for x
   x = 5,096.77/91.34
6. Step 6: Final answer
   x = 55.80