Finding the Fourth Proportional to 17,108.50, 25,638.30 and 7,725.22

Step by Step Solution

1. Step 1: Write the proportion equation
   17,108.50 : 25,638.30 = 7,725.22 : x
2. Step 2: Convert to fraction form
   17,108.50/25,638.30 = 7,725.22/x
3. Step 3: Cross multiply
   17,108.50x = 25,638.30 × 7,725.22
4. Step 4: Simplify right side
   17,108.50x = 198,061,507.93
5. Step 5: Solve for x
   x = 198,061,507.93/17,108.50
6. Step 6: Final answer
   x = 11,576.79