Finding the Fourth Proportional to 12,987.68, 17,922.77 and 7,322.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987.68 : 17,922.77 = 7,322.43 : x
2. Step 2: Convert to fraction form
   12,987.68/17,922.77 = 7,322.43/x
3. Step 3: Cross multiply
   12,987.68x = 17,922.77 × 7,322.43
4. Step 4: Simplify right side
   12,987.68x = 131,238,286.79
5. Step 5: Solve for x
   x = 131,238,286.79/12,987.68
6. Step 6: Final answer
   x = 10,104.83