Finding the Fourth Proportional to 37,938.56, 52,355.20 and 21,171.52

Step by Step Solution

1. Step 1: Write the proportion equation
   37,938.56 : 52,355.20 = 21,171.52 : x
2. Step 2: Convert to fraction form
   37,938.56/52,355.20 = 21,171.52/x
3. Step 3: Cross multiply
   37,938.56x = 52,355.20 × 21,171.52
4. Step 4: Simplify right side
   37,938.56x = 1,108,439,163.90
5. Step 5: Solve for x
   x = 1,108,439,163.90/37,938.56
6. Step 6: Final answer
   x = 29,216.69