Finding the Fourth Proportional to 12,897.37, 17,797.34 and 7,231.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,897.37 : 17,797.34 = 7,231.35 : x
2. Step 2: Convert to fraction form
   12,897.37/17,797.34 = 7,231.35/x
3. Step 3: Cross multiply
   12,897.37x = 17,797.34 × 7,231.35
4. Step 4: Simplify right side
   12,897.37x = 128,698,758.45
5. Step 5: Solve for x
   x = 128,698,758.45/12,897.37
6. Step 6: Final answer
   x = 9,978.69