Finding the Fourth Proportional to 16,931.52, 23,365.69 and 9,378

Step by Step Solution

1. Step 1: Write the proportion equation
   16,931.52 : 23,365.69 = 9,378 : x
2. Step 2: Convert to fraction form
   16,931.52/23,365.69 = 9,378/x
3. Step 3: Cross multiply
   16,931.52x = 23,365.69 × 9,378
4. Step 4: Simplify right side
   16,931.52x = 219,123,440.82
5. Step 5: Solve for x
   x = 219,123,440.82/16,931.52
6. Step 6: Final answer
   x = 12,941.75