Finding the Fourth Proportional to 10,804.78, 16,209.00 and 3,409.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,804.78 : 16,209.00 = 3,409.08 : x
2. Step 2: Convert to fraction form
   10,804.78/16,209.00 = 3,409.08/x
3. Step 3: Cross multiply
   10,804.78x = 16,209.00 × 3,409.08
4. Step 4: Simplify right side
   10,804.78x = 55,257,679.63
5. Step 5: Solve for x
   x = 55,257,679.63/10,804.78
6. Step 6: Final answer
   x = 5,114.19