Finding the Fourth Proportional to 9,358.72, 14,042.72 and 5,198.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,358.72 : 14,042.72 = 5,198.72 : x
2. Step 2: Convert to fraction form
   9,358.72/14,042.72 = 5,198.72/x
3. Step 3: Cross multiply
   9,358.72x = 14,042.72 × 5,198.72
4. Step 4: Simplify right side
   9,358.72x = 73,004,169.32
5. Step 5: Solve for x
   x = 73,004,169.32/9,358.72
6. Step 6: Final answer
   x = 7,800.66