Finding the Fourth Proportional to 16,429.39, 22,672.77 and 9,355.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,429.39 : 22,672.77 = 9,355.84 : x
2. Step 2: Convert to fraction form
   16,429.39/22,672.77 = 9,355.84/x
3. Step 3: Cross multiply
   16,429.39x = 22,672.77 × 9,355.84
4. Step 4: Simplify right side
   16,429.39x = 212,122,808.48
5. Step 5: Solve for x
   x = 212,122,808.48/16,429.39
6. Step 6: Final answer
   x = 12,911.18