Finding the Fourth Proportional to 37,580.50, 51,862.71 and 20,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,580.50 : 51,862.71 = 20,813.50 : x
2. Step 2: Convert to fraction form
   37,580.50/51,862.71 = 20,813.50/x
3. Step 3: Cross multiply
   37,580.50x = 51,862.71 × 20,813.50
4. Step 4: Simplify right side
   37,580.50x = 1,079,444,514.59
5. Step 5: Solve for x
   x = 1,079,444,514.59/37,580.50
6. Step 6: Final answer
   x = 28,723.53