Finding the Fourth Proportional to 13,031.58, 17,982.42 and 7,725.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,031.58 : 17,982.42 = 7,725.54 : x
2. Step 2: Convert to fraction form
   13,031.58/17,982.42 = 7,725.54/x
3. Step 3: Cross multiply
   13,031.58x = 17,982.42 × 7,725.54
4. Step 4: Simplify right side
   13,031.58x = 138,923,905.01
5. Step 5: Solve for x
   x = 138,923,905.01/13,031.58
6. Step 6: Final answer
   x = 10,660.56