Finding the Fourth Proportional to 16,900.78, 23,323.02 and 9,448.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,900.78 : 23,323.02 = 9,448.78 : x
2. Step 2: Convert to fraction form
   16,900.78/23,323.02 = 9,448.78/x
3. Step 3: Cross multiply
   16,900.78x = 23,323.02 × 9,448.78
4. Step 4: Simplify right side
   16,900.78x = 220,374,084.92
5. Step 5: Solve for x
   x = 220,374,084.92/16,900.78
6. Step 6: Final answer
   x = 13,039.28