Finding the Fourth Proportional to 16,860.86, 23,269.56 and 12,604.54

Step by Step Solution

1. Step 1: Write the proportion equation
   16,860.86 : 23,269.56 = 12,604.54 : x
2. Step 2: Convert to fraction form
   16,860.86/23,269.56 = 12,604.54/x
3. Step 3: Cross multiply
   16,860.86x = 23,269.56 × 12,604.54
4. Step 4: Simplify right side
   16,860.86x = 293,302,099.80
5. Step 5: Solve for x
   x = 293,302,099.80/16,860.86
6. Step 6: Final answer
   x = 17,395.45