Finding the Fourth Proportional to 22,141.51, 30,555.42 and 13,189.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,141.51 : 30,555.42 = 13,189.39 : x
2. Step 2: Convert to fraction form
   22,141.51/30,555.42 = 13,189.39/x
3. Step 3: Cross multiply
   22,141.51x = 30,555.42 × 13,189.39
4. Step 4: Simplify right side
   22,141.51x = 403,007,350.99
5. Step 5: Solve for x
   x = 403,007,350.99/22,141.51
6. Step 6: Final answer
   x = 18,201.44