Finding the Fourth Proportional to 12,956.36, 17,880.18 and 7,367.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956.36 : 17,880.18 = 7,367.72 : x
2. Step 2: Convert to fraction form
   12,956.36/17,880.18 = 7,367.72/x
3. Step 3: Cross multiply
   12,956.36x = 17,880.18 × 7,367.72
4. Step 4: Simplify right side
   12,956.36x = 131,736,159.79
5. Step 5: Solve for x
   x = 131,736,159.79/12,956.36
6. Step 6: Final answer
   x = 10,167.68