Finding the Fourth Proportional to 22,987.89, 34,457.31 and 13,105.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,987.89 : 34,457.31 = 13,105.89 : x
2. Step 2: Convert to fraction form
   22,987.89/34,457.31 = 13,105.89/x
3. Step 3: Cross multiply
   22,987.89x = 34,457.31 × 13,105.89
4. Step 4: Simplify right side
   22,987.89x = 451,593,714.56
5. Step 5: Solve for x
   x = 451,593,714.56/22,987.89
6. Step 6: Final answer
   x = 19,644.85