Finding the Fourth Proportional to 16,731.32, 25,101.57 and 13,603.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,731.32 : 25,101.57 = 13,603.55 : x
2. Step 2: Convert to fraction form
   16,731.32/25,101.57 = 13,603.55/x
3. Step 3: Cross multiply
   16,731.32x = 25,101.57 × 13,603.55
4. Step 4: Simplify right side
   16,731.32x = 341,470,462.57
5. Step 5: Solve for x
   x = 341,470,462.57/16,731.32
6. Step 6: Final answer
   x = 20,409.06