Finding the Fourth Proportional to 17,682.72, 26,465.74 and 15,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,682.72 : 26,465.74 = 15,738.72 : x
2. Step 2: Convert to fraction form
   17,682.72/26,465.74 = 15,738.72/x
3. Step 3: Cross multiply
   17,682.72x = 26,465.74 × 15,738.72
4. Step 4: Simplify right side
   17,682.72x = 416,536,871.45
5. Step 5: Solve for x
   x = 416,536,871.45/17,682.72
6. Step 6: Final answer
   x = 23,556.15