Finding the Fourth Proportional to 12,962.23, 17,885.10 and 8,247.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,962.23 : 17,885.10 = 8,247.42 : x
2. Step 2: Convert to fraction form
   12,962.23/17,885.10 = 8,247.42/x
3. Step 3: Cross multiply
   12,962.23x = 17,885.10 × 8,247.42
4. Step 4: Simplify right side
   12,962.23x = 147,505,962.37
5. Step 5: Solve for x
   x = 147,505,962.37/12,962.23
6. Step 6: Final answer
   x = 11,379.68