Finding the Fourth Proportional to 13,494.33, 20,227.59 and 5,172.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,494.33 : 20,227.59 = 5,172.12 : x
2. Step 2: Convert to fraction form
   13,494.33/20,227.59 = 5,172.12/x
3. Step 3: Cross multiply
   13,494.33x = 20,227.59 × 5,172.12
4. Step 4: Simplify right side
   13,494.33x = 104,619,522.79
5. Step 5: Solve for x
   x = 104,619,522.79/13,494.33
6. Step 6: Final answer
   x = 7,752.85