Finding the Fourth Proportional to 13,149.49, 19,674.82 and 7,865.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,149.49 : 19,674.82 = 7,865.05 : x
2. Step 2: Convert to fraction form
   13,149.49/19,674.82 = 7,865.05/x
3. Step 3: Cross multiply
   13,149.49x = 19,674.82 × 7,865.05
4. Step 4: Simplify right side
   13,149.49x = 154,743,443.04
5. Step 5: Solve for x
   x = 154,743,443.04/13,149.49
6. Step 6: Final answer
   x = 11,768.02