Finding the Fourth Proportional to 22,069.62, 30,460.50 and 13,115.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,069.62 : 30,460.50 = 13,115.39 : x
2. Step 2: Convert to fraction form
   22,069.62/30,460.50 = 13,115.39/x
3. Step 3: Cross multiply
   22,069.62x = 30,460.50 × 13,115.39
4. Step 4: Simplify right side
   22,069.62x = 399,501,337.10
5. Step 5: Solve for x
   x = 399,501,337.10/22,069.62
6. Step 6: Final answer
   x = 18,101.87