Finding the Fourth Proportional to 12,984.12, 17,917.88 and 7,319.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,984.12 : 17,917.88 = 7,319.39 : x
2. Step 2: Convert to fraction form
   12,984.12/17,917.88 = 7,319.39/x
3. Step 3: Cross multiply
   12,984.12x = 17,917.88 × 7,319.39
4. Step 4: Simplify right side
   12,984.12x = 131,147,825.51
5. Step 5: Solve for x
   x = 131,147,825.51/12,984.12
6. Step 6: Final answer
   x = 10,100.63