Finding the Fourth Proportional to 3,933.83, 5,428.91 and 2,606.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.83 : 5,428.91 = 2,606.60 : x
2. Step 2: Convert to fraction form
   3,933.83/5,428.91 = 2,606.60/x
3. Step 3: Cross multiply
   3,933.83x = 5,428.91 × 2,606.60
4. Step 4: Simplify right side
   3,933.83x = 14,151,016.89
5. Step 5: Solve for x
   x = 14,151,016.89/3,933.83
6. Step 6: Final answer
   x = 3,597.26