Finding the Fourth Proportional to 53,826, 80,752.05 and 16,890

Step by Step Solution

1. Step 1: Write the proportion equation
   53,826 : 80,752.05 = 16,890 : x
2. Step 2: Convert to fraction form
   53,826/80,752.05 = 16,890/x
3. Step 3: Cross multiply
   53,826x = 80,752.05 × 16,890
4. Step 4: Simplify right side
   53,826x = 1,363,902,124.50
5. Step 5: Solve for x
   x = 1,363,902,124.50/53,826
6. Step 6: Final answer
   x = 25,339.09