Finding the Fourth Proportional to 5,255.94, 7,253.25 and 2,898.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,255.94 : 7,253.25 = 2,898.12 : x
2. Step 2: Convert to fraction form
   5,255.94/7,253.25 = 2,898.12/x
3. Step 3: Cross multiply
   5,255.94x = 7,253.25 × 2,898.12
4. Step 4: Simplify right side
   5,255.94x = 21,020,788.89
5. Step 5: Solve for x
   x = 21,020,788.89/5,255.94
6. Step 6: Final answer
   x = 3,999.43