Finding the Fourth Proportional to 33,018.50, 45,585.17 and 21,708.07

Step by Step Solution

1. Step 1: Write the proportion equation
   33,018.50 : 45,585.17 = 21,708.07 : x
2. Step 2: Convert to fraction form
   33,018.50/45,585.17 = 21,708.07/x
3. Step 3: Cross multiply
   33,018.50x = 45,585.17 × 21,708.07
4. Step 4: Simplify right side
   33,018.50x = 989,565,920.22
5. Step 5: Solve for x
   x = 989,565,920.22/33,018.50
6. Step 6: Final answer
   x = 29,970.04