Finding the Fourth Proportional to 15,741.67, 21,723.78 and 8,667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,741.67 : 21,723.78 = 8,667.94 : x
2. Step 2: Convert to fraction form
   15,741.67/21,723.78 = 8,667.94/x
3. Step 3: Cross multiply
   15,741.67x = 21,723.78 × 8,667.94
4. Step 4: Simplify right side
   15,741.67x = 188,300,421.61
5. Step 5: Solve for x
   x = 188,300,421.61/15,741.67
6. Step 6: Final answer
   x = 11,961.91