Finding the Fourth Proportional to 16,955.58, 23,400.12 and 9,404.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,955.58 : 23,400.12 = 9,404.28 : x
2. Step 2: Convert to fraction form
   16,955.58/23,400.12 = 9,404.28/x
3. Step 3: Cross multiply
   16,955.58x = 23,400.12 × 9,404.28
4. Step 4: Simplify right side
   16,955.58x = 220,061,280.51
5. Step 5: Solve for x
   x = 220,061,280.51/16,955.58
6. Step 6: Final answer
   x = 12,978.69