Finding the Fourth Proportional to 12,620.96, 18,940.72 and 10,184.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.96 : 18,940.72 = 10,184.96 : x
2. Step 2: Convert to fraction form
   12,620.96/18,940.72 = 10,184.96/x
3. Step 3: Cross multiply
   12,620.96x = 18,940.72 × 10,184.96
4. Step 4: Simplify right side
   12,620.96x = 192,910,475.57
5. Step 5: Solve for x
   x = 192,910,475.57/12,620.96
6. Step 6: Final answer
   x = 15,284.93