Finding the Fourth Proportional to 16,931.94, 23,365.02 and 9,378.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.94 : 23,365.02 = 9,378.15 : x
2. Step 2: Convert to fraction form
   16,931.94/23,365.02 = 9,378.15/x
3. Step 3: Cross multiply
   16,931.94x = 23,365.02 × 9,378.15
4. Step 4: Simplify right side
   16,931.94x = 219,120,662.31
5. Step 5: Solve for x
   x = 219,120,662.31/16,931.94
6. Step 6: Final answer
   x = 12,941.26