Finding the Fourth Proportional to 33,062.70, 45,603.86 and 21,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,062.70 : 45,603.86 = 21,120.72 : x
2. Step 2: Convert to fraction form
   33,062.70/45,603.86 = 21,120.72/x
3. Step 3: Cross multiply
   33,062.70x = 45,603.86 × 21,120.72
4. Step 4: Simplify right side
   33,062.70x = 963,186,357.98
5. Step 5: Solve for x
   x = 963,186,357.98/33,062.70
6. Step 6: Final answer
   x = 29,132.11