Finding the Fourth Proportional to 22,384.15, 30,891.58 and 13,431.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.15 : 30,891.58 = 13,431.22 : x
2. Step 2: Convert to fraction form
   22,384.15/30,891.58 = 13,431.22/x
3. Step 3: Cross multiply
   22,384.15x = 30,891.58 × 13,431.22
4. Step 4: Simplify right side
   22,384.15x = 414,911,496.32
5. Step 5: Solve for x
   x = 414,911,496.32/22,384.15
6. Step 6: Final answer
   x = 18,535.95