Finding the Fourth Proportional to 36,131.84, 49,857.78 and 20,820.62

Step by Step Solution

1. Step 1: Write the proportion equation
   36,131.84 : 49,857.78 = 20,820.62 : x
2. Step 2: Convert to fraction form
   36,131.84/49,857.78 = 20,820.62/x
3. Step 3: Cross multiply
   36,131.84x = 49,857.78 × 20,820.62
4. Step 4: Simplify right side
   36,131.84x = 1,038,069,977.03
5. Step 5: Solve for x
   x = 1,038,069,977.03/36,131.84
6. Step 6: Final answer
   x = 28,730.06