Finding the Fourth Proportional to 33,321.22, 45,978.84 and 21,400.69

Step by Step Solution

1. Step 1: Write the proportion equation
   33,321.22 : 45,978.84 = 21,400.69 : x
2. Step 2: Convert to fraction form
   33,321.22/45,978.84 = 21,400.69/x
3. Step 3: Cross multiply
   33,321.22x = 45,978.84 × 21,400.69
4. Step 4: Simplify right side
   33,321.22x = 983,978,901.40
5. Step 5: Solve for x
   x = 983,978,901.40/33,321.22
6. Step 6: Final answer
   x = 29,530.10