Finding the Fourth Proportional to 37,906.27, 52,315.17 and 21,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,906.27 : 52,315.17 = 21,991.25 : x
2. Step 2: Convert to fraction form
   37,906.27/52,315.17 = 21,991.25/x
3. Step 3: Cross multiply
   37,906.27x = 52,315.17 × 21,991.25
4. Step 4: Simplify right side
   37,906.27x = 1,150,475,982.26
5. Step 5: Solve for x
   x = 1,150,475,982.26/37,906.27
6. Step 6: Final answer
   x = 30,350.55