Finding the Fourth Proportional to 12,797.10, 17,623.25 and 10,990.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,797.10 : 17,623.25 = 10,990.09 : x
2. Step 2: Convert to fraction form
   12,797.10/17,623.25 = 10,990.09/x
3. Step 3: Cross multiply
   12,797.10x = 17,623.25 × 10,990.09
4. Step 4: Simplify right side
   12,797.10x = 193,681,048.64
5. Step 5: Solve for x
   x = 193,681,048.64/12,797.10
6. Step 6: Final answer
   x = 15,134.77