Finding the Fourth Proportional to 22,384.77, 30,906.12 and 13,890.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.77 : 30,906.12 = 13,890.33 : x
2. Step 2: Convert to fraction form
   22,384.77/30,906.12 = 13,890.33/x
3. Step 3: Cross multiply
   22,384.77x = 30,906.12 × 13,890.33
4. Step 4: Simplify right side
   22,384.77x = 429,296,205.82
5. Step 5: Solve for x
   x = 429,296,205.82/22,384.77
6. Step 6: Final answer
   x = 19,178.05