Finding the Fourth Proportional to 12,663.21, 17,475.24 and 7,074.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,663.21 : 17,475.24 = 7,074.21 : x
2. Step 2: Convert to fraction form
   12,663.21/17,475.24 = 7,074.21/x
3. Step 3: Cross multiply
   12,663.21x = 17,475.24 × 7,074.21
4. Step 4: Simplify right side
   12,663.21x = 123,623,500.78
5. Step 5: Solve for x
   x = 123,623,500.78/12,663.21
6. Step 6: Final answer
   x = 9,762.41