Finding the Fourth Proportional to 12,788.54, 17,644.46 and 7,410.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788.54 : 17,644.46 = 7,410.62 : x
2. Step 2: Convert to fraction form
   12,788.54/17,644.46 = 7,410.62/x
3. Step 3: Cross multiply
   12,788.54x = 17,644.46 × 7,410.62
4. Step 4: Simplify right side
   12,788.54x = 130,756,388.17
5. Step 5: Solve for x
   x = 130,756,388.17/12,788.54
6. Step 6: Final answer
   x = 10,224.50