Finding the Fourth Proportional to 5,243.20, 7,235.59 and 2,885.33

Step by Step Solution

1. Step 1: Write the proportion equation
   5,243.20 : 7,235.59 = 2,885.33 : x
2. Step 2: Convert to fraction form
   5,243.20/7,235.59 = 2,885.33/x
3. Step 3: Cross multiply
   5,243.20x = 7,235.59 × 2,885.33
4. Step 4: Simplify right side
   5,243.20x = 20,877,064.89
5. Step 5: Solve for x
   x = 20,877,064.89/5,243.20
6. Step 6: Final answer
   x = 3,981.74