Finding the Fourth Proportional to 12,806.84, 17,669.38 and 10,109.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,806.84 : 17,669.38 = 10,109.54 : x
2. Step 2: Convert to fraction form
   12,806.84/17,669.38 = 10,109.54/x
3. Step 3: Cross multiply
   12,806.84x = 17,669.38 × 10,109.54
4. Step 4: Simplify right side
   12,806.84x = 178,629,303.89
5. Step 5: Solve for x
   x = 178,629,303.89/12,806.84
6. Step 6: Final answer
   x = 13,947.96