Finding the Fourth Proportional to 10,953.82, 16,401.57 and 8,558.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,953.82 : 16,401.57 = 8,558.02 : x
2. Step 2: Convert to fraction form
   10,953.82/16,401.57 = 8,558.02/x
3. Step 3: Cross multiply
   10,953.82x = 16,401.57 × 8,558.02
4. Step 4: Simplify right side
   10,953.82x = 140,364,964.09
5. Step 5: Solve for x
   x = 140,364,964.09/10,953.82
6. Step 6: Final answer
   x = 12,814.25