Finding the Fourth Proportional to 15,667.37, 21,620.84 and 8,593.74

Step by Step Solution

1. Step 1: Write the proportion equation
   15,667.37 : 21,620.84 = 8,593.74 : x
2. Step 2: Convert to fraction form
   15,667.37/21,620.84 = 8,593.74/x
3. Step 3: Cross multiply
   15,667.37x = 21,620.84 × 8,593.74
4. Step 4: Simplify right side
   15,667.37x = 185,803,899.03
5. Step 5: Solve for x
   x = 185,803,899.03/15,667.37
6. Step 6: Final answer
   x = 11,859.29