Finding the Fourth Proportional to 33,418.69, 46,117.79 and 19,990.51

Step by Step Solution

1. Step 1: Write the proportion equation
   33,418.69 : 46,117.79 = 19,990.51 : x
2. Step 2: Convert to fraction form
   33,418.69/46,117.79 = 19,990.51/x
3. Step 3: Cross multiply
   33,418.69x = 46,117.79 × 19,990.51
4. Step 4: Simplify right side
   33,418.69x = 921,918,001.89
5. Step 5: Solve for x
   x = 921,918,001.89/33,418.69
6. Step 6: Final answer
   x = 27,586.90