Finding the Fourth Proportional to 33,105.17, 45,653.83 and 21,147.75

Step by Step Solution

1. Step 1: Write the proportion equation
   33,105.17 : 45,653.83 = 21,147.75 : x
2. Step 2: Convert to fraction form
   33,105.17/45,653.83 = 21,147.75/x
3. Step 3: Cross multiply
   33,105.17x = 45,653.83 × 21,147.75
4. Step 4: Simplify right side
   33,105.17x = 965,475,730.51
5. Step 5: Solve for x
   x = 965,475,730.51/33,105.17
6. Step 6: Final answer
   x = 29,163.89