Finding the Fourth Proportional to 7,198.08, 10,789.20 and 2,814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,198.08 : 10,789.20 = 2,814.72 : x
2. Step 2: Convert to fraction form
   7,198.08/10,789.20 = 2,814.72/x
3. Step 3: Cross multiply
   7,198.08x = 10,789.20 × 2,814.72
4. Step 4: Simplify right side
   7,198.08x = 30,368,577.02
5. Step 5: Solve for x
   x = 30,368,577.02/7,198.08
6. Step 6: Final answer
   x = 4,218.98