Finding the Fourth Proportional to 10,411.42, 15,597.15 and 8,725.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,411.42 : 15,597.15 = 8,725.54 : x
2. Step 2: Convert to fraction form
   10,411.42/15,597.15 = 8,725.54/x
3. Step 3: Cross multiply
   10,411.42x = 15,597.15 × 8,725.54
4. Step 4: Simplify right side
   10,411.42x = 136,093,556.21
5. Step 5: Solve for x
   x = 136,093,556.21/10,411.42
6. Step 6: Final answer
   x = 13,071.57