Finding the Fourth Proportional to 20,196.50, 30,271.01 and 9,090.18

Step by Step Solution

1. Step 1: Write the proportion equation
   20,196.50 : 30,271.01 = 9,090.18 : x
2. Step 2: Convert to fraction form
   20,196.50/30,271.01 = 9,090.18/x
3. Step 3: Cross multiply
   20,196.50x = 30,271.01 × 9,090.18
4. Step 4: Simplify right side
   20,196.50x = 275,168,884.23
5. Step 5: Solve for x
   x = 275,168,884.23/20,196.50
6. Step 6: Final answer
   x = 13,624.59