Finding the Fourth Proportional to 12,494.77, 17,243.30 and 7,189.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.77 : 17,243.30 = 7,189.61 : x
2. Step 2: Convert to fraction form
   12,494.77/17,243.30 = 7,189.61/x
3. Step 3: Cross multiply
   12,494.77x = 17,243.30 × 7,189.61
4. Step 4: Simplify right side
   12,494.77x = 123,972,533.87
5. Step 5: Solve for x
   x = 123,972,533.87/12,494.77
6. Step 6: Final answer
   x = 9,921.96