Finding the Fourth Proportional to 12,914.78, 17,819.49 and 7,610.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.78 : 17,819.49 = 7,610.09 : x
2. Step 2: Convert to fraction form
   12,914.78/17,819.49 = 7,610.09/x
3. Step 3: Cross multiply
   12,914.78x = 17,819.49 × 7,610.09
4. Step 4: Simplify right side
   12,914.78x = 135,607,922.65
5. Step 5: Solve for x
   x = 135,607,922.65/12,914.78
6. Step 6: Final answer
   x = 10,500.21