Finding the Fourth Proportional to 8,739.21, 12,060.24 and 4,962.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.21 : 12,060.24 = 4,962.09 : x
2. Step 2: Convert to fraction form
   8,739.21/12,060.24 = 4,962.09/x
3. Step 3: Cross multiply
   8,739.21x = 12,060.24 × 4,962.09
4. Step 4: Simplify right side
   8,739.21x = 59,843,996.30
5. Step 5: Solve for x
   x = 59,843,996.30/8,739.21
6. Step 6: Final answer
   x = 6,847.76