Finding the Fourth Proportional to 33,280.16, 45,915.57 and 21,955.28

Step by Step Solution

1. Step 1: Write the proportion equation
   33,280.16 : 45,915.57 = 21,955.28 : x
2. Step 2: Convert to fraction form
   33,280.16/45,915.57 = 21,955.28/x
3. Step 3: Cross multiply
   33,280.16x = 45,915.57 × 21,955.28
4. Step 4: Simplify right side
   33,280.16x = 1,008,088,966.13
5. Step 5: Solve for x
   x = 1,008,088,966.13/33,280.16
6. Step 6: Final answer
   x = 30,290.99