Finding the Fourth Proportional to 22,458.65, 30,992.89 and 13,511.35

Step by Step Solution

1. Step 1: Write the proportion equation
   22,458.65 : 30,992.89 = 13,511.35 : x
2. Step 2: Convert to fraction form
   22,458.65/30,992.89 = 13,511.35/x
3. Step 3: Cross multiply
   22,458.65x = 30,992.89 × 13,511.35
4. Step 4: Simplify right side
   22,458.65x = 418,755,561.78
5. Step 5: Solve for x
   x = 418,755,561.78/22,458.65
6. Step 6: Final answer
   x = 18,645.62