Finding the Fourth Proportional to 22,438.35, 30,961.31 and 13,005.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,438.35 : 30,961.31 = 13,005.09 : x
2. Step 2: Convert to fraction form
   22,438.35/30,961.31 = 13,005.09/x
3. Step 3: Cross multiply
   22,438.35x = 30,961.31 × 13,005.09
4. Step 4: Simplify right side
   22,438.35x = 402,654,558.04
5. Step 5: Solve for x
   x = 402,654,558.04/22,438.35
6. Step 6: Final answer
   x = 17,944.93