Finding the Fourth Proportional to 12,956.91, 17,880.60 and 7,291.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956.91 : 17,880.60 = 7,291.76 : x
2. Step 2: Convert to fraction form
   12,956.91/17,880.60 = 7,291.76/x
3. Step 3: Cross multiply
   12,956.91x = 17,880.60 × 7,291.76
4. Step 4: Simplify right side
   12,956.91x = 130,380,981.80
5. Step 5: Solve for x
   x = 130,380,981.80/12,956.91
6. Step 6: Final answer
   x = 10,062.66