Finding the Fourth Proportional to 33,072.18, 45,613.18 and 21,753.30

Step by Step Solution

1. Step 1: Write the proportion equation
   33,072.18 : 45,613.18 = 21,753.30 : x
2. Step 2: Convert to fraction form
   33,072.18/45,613.18 = 21,753.30/x
3. Step 3: Cross multiply
   33,072.18x = 45,613.18 × 21,753.30
4. Step 4: Simplify right side
   33,072.18x = 992,237,188.49
5. Step 5: Solve for x
   x = 992,237,188.49/33,072.18
6. Step 6: Final answer
   x = 30,002.17