Finding the Fourth Proportional to 15,641.60, 21,585.72 and 8,568.03

Step by Step Solution

1. Step 1: Write the proportion equation
   15,641.60 : 21,585.72 = 8,568.03 : x
2. Step 2: Convert to fraction form
   15,641.60/21,585.72 = 8,568.03/x
3. Step 3: Cross multiply
   15,641.60x = 21,585.72 × 8,568.03
4. Step 4: Simplify right side
   15,641.60x = 184,947,096.53
5. Step 5: Solve for x
   x = 184,947,096.53/15,641.60
6. Step 6: Final answer
   x = 11,824.05