Finding the Fourth Proportional to 15,667.81, 21,621.58 and 8,594.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,667.81 : 21,621.58 = 8,594.25 : x
2. Step 2: Convert to fraction form
   15,667.81/21,621.58 = 8,594.25/x
3. Step 3: Cross multiply
   15,667.81x = 21,621.58 × 8,594.25
4. Step 4: Simplify right side
   15,667.81x = 185,821,301.68
5. Step 5: Solve for x
   x = 185,821,301.68/15,667.81
6. Step 6: Final answer
   x = 11,860.07