Finding the Fourth Proportional to 12,743.24, 17,582.82 and 7,153.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.24 : 17,582.82 = 7,153.88 : x
2. Step 2: Convert to fraction form
   12,743.24/17,582.82 = 7,153.88/x
3. Step 3: Cross multiply
   12,743.24x = 17,582.82 × 7,153.88
4. Step 4: Simplify right side
   12,743.24x = 125,785,384.34
5. Step 5: Solve for x
   x = 125,785,384.34/12,743.24
6. Step 6: Final answer
   x = 9,870.75