Finding the Fourth Proportional to 12,987.69, 17,923.93 and 7,322.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987.69 : 17,923.93 = 7,322.96 : x
2. Step 2: Convert to fraction form
   12,987.69/17,923.93 = 7,322.96/x
3. Step 3: Cross multiply
   12,987.69x = 17,923.93 × 7,322.96
4. Step 4: Simplify right side
   12,987.69x = 131,256,290.13
5. Step 5: Solve for x
   x = 131,256,290.13/12,987.69
6. Step 6: Final answer
   x = 10,106.21