Finding the Fourth Proportional to 16,488.35, 22,755.04 and 9,315.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,488.35 : 22,755.04 = 9,315.78 : x
2. Step 2: Convert to fraction form
   16,488.35/22,755.04 = 9,315.78/x
3. Step 3: Cross multiply
   16,488.35x = 22,755.04 × 9,315.78
4. Step 4: Simplify right side
   16,488.35x = 211,980,946.53
5. Step 5: Solve for x
   x = 211,980,946.53/16,488.35
6. Step 6: Final answer
   x = 12,856.41