Finding the Fourth Proportional to 12,727.37, 17,563.76 and 7,421.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,727.37 : 17,563.76 = 7,421.15 : x
2. Step 2: Convert to fraction form
   12,727.37/17,563.76 = 7,421.15/x
3. Step 3: Cross multiply
   12,727.37x = 17,563.76 × 7,421.15
4. Step 4: Simplify right side
   12,727.37x = 130,343,172.60
5. Step 5: Solve for x
   x = 130,343,172.60/12,727.37
6. Step 6: Final answer
   x = 10,241.18