Finding the Fourth Proportional to 13,715.54, 20,568.18 and 5,397.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,715.54 : 20,568.18 = 5,397.42 : x
2. Step 2: Convert to fraction form
   13,715.54/20,568.18 = 5,397.42/x
3. Step 3: Cross multiply
   13,715.54x = 20,568.18 × 5,397.42
4. Step 4: Simplify right side
   13,715.54x = 111,015,106.10
5. Step 5: Solve for x
   x = 111,015,106.10/13,715.54
6. Step 6: Final answer
   x = 8,094.11