Finding the Fourth Proportional to 33,280.12, 45,906.42 and 19,842.40

Step by Step Solution

1. Step 1: Write the proportion equation
   33,280.12 : 45,906.42 = 19,842.40 : x
2. Step 2: Convert to fraction form
   33,280.12/45,906.42 = 19,842.40/x
3. Step 3: Cross multiply
   33,280.12x = 45,906.42 × 19,842.40
4. Step 4: Simplify right side
   33,280.12x = 910,893,548.21
5. Step 5: Solve for x
   x = 910,893,548.21/33,280.12
6. Step 6: Final answer
   x = 27,370.50