Finding the Fourth Proportional to 13,774.49, 19,009.61 and 7,725.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,774.49 : 19,009.61 = 7,725.24 : x
2. Step 2: Convert to fraction form
   13,774.49/19,009.61 = 7,725.24/x
3. Step 3: Cross multiply
   13,774.49x = 19,009.61 × 7,725.24
4. Step 4: Simplify right side
   13,774.49x = 146,853,760.93
5. Step 5: Solve for x
   x = 146,853,760.93/13,774.49
6. Step 6: Final answer
   x = 10,661.29