Finding the Fourth Proportional to 6,900.22, 10,345.72 and 2,739.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.22 : 10,345.72 = 2,739.12 : x
2. Step 2: Convert to fraction form
   6,900.22/10,345.72 = 2,739.12/x
3. Step 3: Cross multiply
   6,900.22x = 10,345.72 × 2,739.12
4. Step 4: Simplify right side
   6,900.22x = 28,338,168.57
5. Step 5: Solve for x
   x = 28,338,168.57/6,900.22
6. Step 6: Final answer
   x = 4,106.85