Finding the Fourth Proportional to 4,986.37, 7,420.70 and 4,820.27

Step by Step Solution

1. Step 1: Write the proportion equation
   4,986.37 : 7,420.70 = 4,820.27 : x
2. Step 2: Convert to fraction form
   4,986.37/7,420.70 = 4,820.27/x
3. Step 3: Cross multiply
   4,986.37x = 7,420.70 × 4,820.27
4. Step 4: Simplify right side
   4,986.37x = 35,769,777.59
5. Step 5: Solve for x
   x = 35,769,777.59/4,986.37
6. Step 6: Final answer
   x = 7,173.51