Finding the Fourth Proportional to 12,809.00, 17,674.54 and 7,431.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,809.00 : 17,674.54 = 7,431.21 : x
2. Step 2: Convert to fraction form
   12,809.00/17,674.54 = 7,431.21/x
3. Step 3: Cross multiply
   12,809.00x = 17,674.54 × 7,431.21
4. Step 4: Simplify right side
   12,809.00x = 131,343,199.82
5. Step 5: Solve for x
   x = 131,343,199.82/12,809.00
6. Step 6: Final answer
   x = 10,253.98