Finding the Fourth Proportional to 16,440.78, 22,687.05 and 9,365.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,440.78 : 22,687.05 = 9,365.82 : x
2. Step 2: Convert to fraction form
   16,440.78/22,687.05 = 9,365.82/x
3. Step 3: Cross multiply
   16,440.78x = 22,687.05 × 9,365.82
4. Step 4: Simplify right side
   16,440.78x = 212,482,826.63
5. Step 5: Solve for x
   x = 212,482,826.63/16,440.78
6. Step 6: Final answer
   x = 12,924.13