Finding the Fourth Proportional to 37,171.32, 55,732.72 and 21,161.34

Step by Step Solution

1. Step 1: Write the proportion equation
   37,171.32 : 55,732.72 = 21,161.34 : x
2. Step 2: Convert to fraction form
   37,171.32/55,732.72 = 21,161.34/x
3. Step 3: Cross multiply
   37,171.32x = 55,732.72 × 21,161.34
4. Step 4: Simplify right side
   37,171.32x = 1,179,378,984.14
5. Step 5: Solve for x
   x = 1,179,378,984.14/37,171.32
6. Step 6: Final answer
   x = 31,728.20