Finding the Fourth Proportional to 16,638.96, 24,900.03 and 12,917.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.96 : 24,900.03 = 12,917.46 : x
2. Step 2: Convert to fraction form
   16,638.96/24,900.03 = 12,917.46/x
3. Step 3: Cross multiply
   16,638.96x = 24,900.03 × 12,917.46
4. Step 4: Simplify right side
   16,638.96x = 321,645,141.52
5. Step 5: Solve for x
   x = 321,645,141.52/16,638.96
6. Step 6: Final answer
   x = 19,330.84