Finding the Fourth Proportional to 11,078.76, 16,620.60 and 3,685.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.76 : 16,620.60 = 3,685.68 : x
2. Step 2: Convert to fraction form
   11,078.76/16,620.60 = 3,685.68/x
3. Step 3: Cross multiply
   11,078.76x = 16,620.60 × 3,685.68
4. Step 4: Simplify right side
   11,078.76x = 61,258,213.01
5. Step 5: Solve for x
   x = 61,258,213.01/11,078.76
6. Step 6: Final answer
   x = 5,529.34