Finding the Fourth Proportional to 13,268.96, 19,900.60 and 3,906.44

Step by Step Solution

1. Step 1: Write the proportion equation
   13,268.96 : 19,900.60 = 3,906.44 : x
2. Step 2: Convert to fraction form
   13,268.96/19,900.60 = 3,906.44/x
3. Step 3: Cross multiply
   13,268.96x = 19,900.60 × 3,906.44
4. Step 4: Simplify right side
   13,268.96x = 77,740,499.86
5. Step 5: Solve for x
   x = 77,740,499.86/13,268.96
6. Step 6: Final answer
   x = 5,858.82