Finding the Fourth Proportional to 33,321.48, 45,984.20 and 19,890.12

Step by Step Solution

1. Step 1: Write the proportion equation
   33,321.48 : 45,984.20 = 19,890.12 : x
2. Step 2: Convert to fraction form
   33,321.48/45,984.20 = 19,890.12/x
3. Step 3: Cross multiply
   33,321.48x = 45,984.20 × 19,890.12
4. Step 4: Simplify right side
   33,321.48x = 914,631,256.10
5. Step 5: Solve for x
   x = 914,631,256.10/33,321.48
6. Step 6: Final answer
   x = 27,448.70