Finding the Fourth Proportional to 15,667.58, 21,621.11 and 8,594.03

Step by Step Solution

1. Step 1: Write the proportion equation
   15,667.58 : 21,621.11 = 8,594.03 : x
2. Step 2: Convert to fraction form
   15,667.58/21,621.11 = 8,594.03/x
3. Step 3: Cross multiply
   15,667.58x = 21,621.11 × 8,594.03
4. Step 4: Simplify right side
   15,667.58x = 185,812,316.90
5. Step 5: Solve for x
   x = 185,812,316.90/15,667.58
6. Step 6: Final answer
   x = 11,859.67