Finding the Fourth Proportional to 20,112.13, 30,164.76 and 5,322.55

Step by Step Solution

1. Step 1: Write the proportion equation
   20,112.13 : 30,164.76 = 5,322.55 : x
2. Step 2: Convert to fraction form
   20,112.13/30,164.76 = 5,322.55/x
3. Step 3: Cross multiply
   20,112.13x = 30,164.76 × 5,322.55
4. Step 4: Simplify right side
   20,112.13x = 160,553,443.34
5. Step 5: Solve for x
   x = 160,553,443.34/20,112.13
6. Step 6: Final answer
   x = 7,982.92