Finding the Fourth Proportional to 22,522.49, 31,081.41 and 13,091.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,522.49 : 31,081.41 = 13,091.05 : x
2. Step 2: Convert to fraction form
   22,522.49/31,081.41 = 13,091.05/x
3. Step 3: Cross multiply
   22,522.49x = 31,081.41 × 13,091.05
4. Step 4: Simplify right side
   22,522.49x = 406,888,292.38
5. Step 5: Solve for x
   x = 406,888,292.38/22,522.49
6. Step 6: Final answer
   x = 18,065.87