Finding the Fourth Proportional to 12,493.44, 17,241.12 and 7,189.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,493.44 : 17,241.12 = 7,189.56 : x
2. Step 2: Convert to fraction form
   12,493.44/17,241.12 = 7,189.56/x
3. Step 3: Cross multiply
   12,493.44x = 17,241.12 × 7,189.56
4. Step 4: Simplify right side
   12,493.44x = 123,956,066.71
5. Step 5: Solve for x
   x = 123,956,066.71/12,493.44
6. Step 6: Final answer
   x = 9,921.69