Finding the Fourth Proportional to 22,268.72, 30,730.69 and 13,316.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,268.72 : 30,730.69 = 13,316.60 : x
2. Step 2: Convert to fraction form
   22,268.72/30,730.69 = 13,316.60/x
3. Step 3: Cross multiply
   22,268.72x = 30,730.69 × 13,316.60
4. Step 4: Simplify right side
   22,268.72x = 409,228,399.93
5. Step 5: Solve for x
   x = 409,228,399.93/22,268.72
6. Step 6: Final answer
   x = 18,376.82