Finding the Fourth Proportional to 22,005.29, 30,365.96 and 12,929.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,005.29 : 30,365.96 = 12,929.31 : x
2. Step 2: Convert to fraction form
   22,005.29/30,365.96 = 12,929.31/x
3. Step 3: Cross multiply
   22,005.29x = 30,365.96 × 12,929.31
4. Step 4: Simplify right side
   22,005.29x = 392,610,845.64
5. Step 5: Solve for x
   x = 392,610,845.64/22,005.29
6. Step 6: Final answer
   x = 17,841.66