Finding the Fourth Proportional to 10,800.06, 16,200.06 and 3,405.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,800.06 : 16,200.06 = 3,405.18 : x
2. Step 2: Convert to fraction form
   10,800.06/16,200.06 = 3,405.18/x
3. Step 3: Cross multiply
   10,800.06x = 16,200.06 × 3,405.18
4. Step 4: Simplify right side
   10,800.06x = 55,164,120.31
5. Step 5: Solve for x
   x = 55,164,120.31/10,800.06
6. Step 6: Final answer
   x = 5,107.76