Finding the Fourth Proportional to 15,667.32, 21,621.13 and 8,593.59

Step by Step Solution

1. Step 1: Write the proportion equation
   15,667.32 : 21,621.13 = 8,593.59 : x
2. Step 2: Convert to fraction form
   15,667.32/21,621.13 = 8,593.59/x
3. Step 3: Cross multiply
   15,667.32x = 21,621.13 × 8,593.59
4. Step 4: Simplify right side
   15,667.32x = 185,803,186.15
5. Step 5: Solve for x
   x = 185,803,186.15/15,667.32
6. Step 6: Final answer
   x = 11,859.28