Finding the Fourth Proportional to 15,667.41, 21,620.86 and 8,593.89

Step by Step Solution

1. Step 1: Write the proportion equation
   15,667.41 : 21,620.86 = 8,593.89 : x
2. Step 2: Convert to fraction form
   15,667.41/21,620.86 = 8,593.89/x
3. Step 3: Cross multiply
   15,667.41x = 21,620.86 × 8,593.89
4. Step 4: Simplify right side
   15,667.41x = 185,807,292.55
5. Step 5: Solve for x
   x = 185,807,292.55/15,667.41
6. Step 6: Final answer
   x = 11,859.48