Finding the Fourth Proportional to 33,309.61, 45,967.31 and 18,405.61

Step by Step Solution

1. Step 1: Write the proportion equation
   33,309.61 : 45,967.31 = 18,405.61 : x
2. Step 2: Convert to fraction form
   33,309.61/45,967.31 = 18,405.61/x
3. Step 3: Cross multiply
   33,309.61x = 45,967.31 × 18,405.61
4. Step 4: Simplify right side
   33,309.61x = 846,056,288.58
5. Step 5: Solve for x
   x = 846,056,288.58/33,309.61
6. Step 6: Final answer
   x = 25,399.77