Finding the Fourth Proportional to 22,513.59, 31,072.61 and 13,087.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,513.59 : 31,072.61 = 13,087.62 : x
2. Step 2: Convert to fraction form
   22,513.59/31,072.61 = 13,087.62/x
3. Step 3: Cross multiply
   22,513.59x = 31,072.61 × 13,087.62
4. Step 4: Simplify right side
   22,513.59x = 406,666,544.81
5. Step 5: Solve for x
   x = 406,666,544.81/22,513.59
6. Step 6: Final answer
   x = 18,063.16