Finding the Fourth Proportional to 37,587, 51,870.17 and 20,820

Step by Step Solution

1. Step 1: Write the proportion equation
   37,587 : 51,870.17 = 20,820 : x
2. Step 2: Convert to fraction form
   37,587/51,870.17 = 20,820/x
3. Step 3: Cross multiply
   37,587x = 51,870.17 × 20,820
4. Step 4: Simplify right side
   37,587x = 1,079,936,991.45
5. Step 5: Solve for x
   x = 1,079,936,991.45/37,587
6. Step 6: Final answer
   x = 28,731.66