Finding the Fourth Proportional to 22,456.10, 30,993.10 and 13,508.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.10 : 30,993.10 = 13,508.55 : x
2. Step 2: Convert to fraction form
   22,456.10/30,993.10 = 13,508.55/x
3. Step 3: Cross multiply
   22,456.10x = 30,993.10 × 13,508.55
4. Step 4: Simplify right side
   22,456.10x = 418,671,807.23
5. Step 5: Solve for x
   x = 418,671,807.23/22,456.10
6. Step 6: Final answer
   x = 18,644.01