Finding the Fourth Proportional to 12,290.34, 16,956.69 and 7,256.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,290.34 : 16,956.69 = 7,256.25 : x
2. Step 2: Convert to fraction form
   12,290.34/16,956.69 = 7,256.25/x
3. Step 3: Cross multiply
   12,290.34x = 16,956.69 × 7,256.25
4. Step 4: Simplify right side
   12,290.34x = 123,042,018.19
5. Step 5: Solve for x
   x = 123,042,018.19/12,290.34
6. Step 6: Final answer
   x = 10,011.28