Finding the Fourth Proportional to 22,389.33, 30,896.15 and 13,435.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.33 : 30,896.15 = 13,435.05 : x
2. Step 2: Convert to fraction form
   22,389.33/30,896.15 = 13,435.05/x
3. Step 3: Cross multiply
   22,389.33x = 30,896.15 × 13,435.05
4. Step 4: Simplify right side
   22,389.33x = 415,091,252.88
5. Step 5: Solve for x
   x = 415,091,252.88/22,389.33
6. Step 6: Final answer
   x = 18,539.69