Finding the Fourth Proportional to 5,085.75, 7,018.35 and 2,989.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.75 : 7,018.35 = 2,989.89 : x
2. Step 2: Convert to fraction form
   5,085.75/7,018.35 = 2,989.89/x
3. Step 3: Cross multiply
   5,085.75x = 7,018.35 × 2,989.89
4. Step 4: Simplify right side
   5,085.75x = 20,984,094.48
5. Step 5: Solve for x
   x = 20,984,094.48/5,085.75
6. Step 6: Final answer
   x = 4,126.06