Finding the Fourth Proportional to 22,389.83, 30,896.84 and 13,435.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.83 : 30,896.84 = 13,435.55 : x
2. Step 2: Convert to fraction form
   22,389.83/30,896.84 = 13,435.55/x
3. Step 3: Cross multiply
   22,389.83x = 30,896.84 × 13,435.55
4. Step 4: Simplify right side
   22,389.83x = 415,115,971.48
5. Step 5: Solve for x
   x = 415,115,971.48/22,389.83
6. Step 6: Final answer
   x = 18,540.38