Finding the Fourth Proportional to 36,128.63, 49,860.46 and 20,819.94

Step by Step Solution

1. Step 1: Write the proportion equation
   36,128.63 : 49,860.46 = 20,819.94 : x
2. Step 2: Convert to fraction form
   36,128.63/49,860.46 = 20,819.94/x
3. Step 3: Cross multiply
   36,128.63x = 49,860.46 × 20,819.94
4. Step 4: Simplify right side
   36,128.63x = 1,038,091,785.57
5. Step 5: Solve for x
   x = 1,038,091,785.57/36,128.63
6. Step 6: Final answer
   x = 28,733.22