Finding the Fourth Proportional to 22,518.05, 31,076.82 and 13,086

Step by Step Solution

1. Step 1: Write the proportion equation
   22,518.05 : 31,076.82 = 13,086 : x
2. Step 2: Convert to fraction form
   22,518.05/31,076.82 = 13,086/x
3. Step 3: Cross multiply
   22,518.05x = 31,076.82 × 13,086
4. Step 4: Simplify right side
   22,518.05x = 406,671,266.52
5. Step 5: Solve for x
   x = 406,671,266.52/22,518.05
6. Step 6: Final answer
   x = 18,059.79