Finding the Fourth Proportional to 16,790.58, 23,160.42 and 12,479.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,790.58 : 23,160.42 = 12,479.83 : x
2. Step 2: Convert to fraction form
   16,790.58/23,160.42 = 12,479.83/x
3. Step 3: Cross multiply
   16,790.58x = 23,160.42 × 12,479.83
4. Step 4: Simplify right side
   16,790.58x = 289,038,104.33
5. Step 5: Solve for x
   x = 289,038,104.33/16,790.58
6. Step 6: Final answer
   x = 17,214.30