Finding the Fourth Proportional to 37,669.50, 51,986.34 and 20,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,669.50 : 51,986.34 = 20,902.50 : x
2. Step 2: Convert to fraction form
   37,669.50/51,986.34 = 20,902.50/x
3. Step 3: Cross multiply
   37,669.50x = 51,986.34 × 20,902.50
4. Step 4: Simplify right side
   37,669.50x = 1,086,644,471.85
5. Step 5: Solve for x
   x = 1,086,644,471.85/37,669.50
6. Step 6: Final answer
   x = 28,846.80