Finding the Fourth Proportional to 7,172.91, 9,895.83 and 5,288.97

Step by Step Solution

1. Step 1: Write the proportion equation
   7,172.91 : 9,895.83 = 5,288.97 : x
2. Step 2: Convert to fraction form
   7,172.91/9,895.83 = 5,288.97/x
3. Step 3: Cross multiply
   7,172.91x = 9,895.83 × 5,288.97
4. Step 4: Simplify right side
   7,172.91x = 52,338,748.00
5. Step 5: Solve for x
   x = 52,338,748.00/7,172.91
6. Step 6: Final answer
   x = 7,296.72