Finding the Fourth Proportional to 12,914.39, 17,822.06 and 7,171.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,914.39 : 17,822.06 = 7,171.69 : x
2. Step 2: Convert to fraction form
   12,914.39/17,822.06 = 7,171.69/x
3. Step 3: Cross multiply
   12,914.39x = 17,822.06 × 7,171.69
4. Step 4: Simplify right side
   12,914.39x = 127,814,289.48
5. Step 5: Solve for x
   x = 127,814,289.48/12,914.39
6. Step 6: Final answer
   x = 9,897.04