Finding the Fourth Proportional to 16,191.28, 24,307.98 and 8,405.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,191.28 : 24,307.98 = 8,405.56 : x
2. Step 2: Convert to fraction form
   16,191.28/24,307.98 = 8,405.56/x
3. Step 3: Cross multiply
   16,191.28x = 24,307.98 × 8,405.56
4. Step 4: Simplify right side
   16,191.28x = 204,322,184.37
5. Step 5: Solve for x
   x = 204,322,184.37/16,191.28
6. Step 6: Final answer
   x = 12,619.27