Finding the Fourth Proportional to 12,291.20, 16,966.24 and 7,256.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291.20 : 16,966.24 = 7,256.24 : x
2. Step 2: Convert to fraction form
   12,291.20/16,966.24 = 7,256.24/x
3. Step 3: Cross multiply
   12,291.20x = 16,966.24 × 7,256.24
4. Step 4: Simplify right side
   12,291.20x = 123,111,109.34
5. Step 5: Solve for x
   x = 123,111,109.34/12,291.20
6. Step 6: Final answer
   x = 10,016.20