Finding the Fourth Proportional to 33,216.80, 45,838.76 and 21,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,216.80 : 45,838.76 = 21,902.72 : x
2. Step 2: Convert to fraction form
   33,216.80/45,838.76 = 21,902.72/x
3. Step 3: Cross multiply
   33,216.80x = 45,838.76 × 21,902.72
4. Step 4: Simplify right side
   33,216.80x = 1,003,993,525.43
5. Step 5: Solve for x
   x = 1,003,993,525.43/33,216.80
6. Step 6: Final answer
   x = 30,225.47