Finding the Fourth Proportional to 16,955.60, 23,399 and 9,402.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,955.60 : 23,399 = 9,402.24 : x
2. Step 2: Convert to fraction form
   16,955.60/23,399 = 9,402.24/x
3. Step 3: Cross multiply
   16,955.60x = 23,399 × 9,402.24
4. Step 4: Simplify right side
   16,955.60x = 220,003,013.76
5. Step 5: Solve for x
   x = 220,003,013.76/16,955.60
6. Step 6: Final answer
   x = 12,975.24