Finding the Fourth Proportional to 37,586.79, 51,870.38 and 20,818.71

Step by Step Solution

1. Step 1: Write the proportion equation
   37,586.79 : 51,870.38 = 20,818.71 : x
2. Step 2: Convert to fraction form
   37,586.79/51,870.38 = 20,818.71/x
3. Step 3: Cross multiply
   37,586.79x = 51,870.38 × 20,818.71
4. Step 4: Simplify right side
   37,586.79x = 1,079,874,294.72
5. Step 5: Solve for x
   x = 1,079,874,294.72/37,586.79
6. Step 6: Final answer
   x = 28,730.15