Finding the Fourth Proportional to 35,986.62, 49,648.16 and 20,870.81

Step by Step Solution

1. Step 1: Write the proportion equation
   35,986.62 : 49,648.16 = 20,870.81 : x
2. Step 2: Convert to fraction form
   35,986.62/49,648.16 = 20,870.81/x
3. Step 3: Cross multiply
   35,986.62x = 49,648.16 × 20,870.81
4. Step 4: Simplify right side
   35,986.62x = 1,036,196,961.61
5. Step 5: Solve for x
   x = 1,036,196,961.61/35,986.62
6. Step 6: Final answer
   x = 28,793.95