Finding the Fourth Proportional to 32,790.67, 49,188.71 and 13,820.78

Step by Step Solution

1. Step 1: Write the proportion equation
   32,790.67 : 49,188.71 = 13,820.78 : x
2. Step 2: Convert to fraction form
   32,790.67/49,188.71 = 13,820.78/x
3. Step 3: Cross multiply
   32,790.67x = 49,188.71 × 13,820.78
4. Step 4: Simplify right side
   32,790.67x = 679,826,339.39
5. Step 5: Solve for x
   x = 679,826,339.39/32,790.67
6. Step 6: Final answer
   x = 20,732.31