Finding the Fourth Proportional to 13,188.43, 19,778.73 and 7,183.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,188.43 : 19,778.73 = 7,183.59 : x
2. Step 2: Convert to fraction form
   13,188.43/19,778.73 = 7,183.59/x
3. Step 3: Cross multiply
   13,188.43x = 19,778.73 × 7,183.59
4. Step 4: Simplify right side
   13,188.43x = 142,082,287.04
5. Step 5: Solve for x
   x = 142,082,287.04/13,188.43
6. Step 6: Final answer
   x = 10,773.25