Finding the Fourth Proportional to 12,931.41, 17,846.97 and 7,894.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.41 : 17,846.97 = 7,894.56 : x
2. Step 2: Convert to fraction form
   12,931.41/17,846.97 = 7,894.56/x
3. Step 3: Cross multiply
   12,931.41x = 17,846.97 × 7,894.56
4. Step 4: Simplify right side
   12,931.41x = 140,893,975.48
5. Step 5: Solve for x
   x = 140,893,975.48/12,931.41
6. Step 6: Final answer
   x = 10,895.48