Finding the Fourth Proportional to 12,538.48, 17,308.61 and 8,776.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538.48 : 17,308.61 = 8,776.42 : x
2. Step 2: Convert to fraction form
   12,538.48/17,308.61 = 8,776.42/x
3. Step 3: Cross multiply
   12,538.48x = 17,308.61 × 8,776.42
4. Step 4: Simplify right side
   12,538.48x = 151,907,609.65
5. Step 5: Solve for x
   x = 151,907,609.65/12,538.48
6. Step 6: Final answer
   x = 12,115.32