Finding the Fourth Proportional to 11,905.46, 16,442.37 and 9,284.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,905.46 : 16,442.37 = 9,284.18 : x
2. Step 2: Convert to fraction form
   11,905.46/16,442.37 = 9,284.18/x
3. Step 3: Cross multiply
   11,905.46x = 16,442.37 × 9,284.18
4. Step 4: Simplify right side
   11,905.46x = 152,653,922.71
5. Step 5: Solve for x
   x = 152,653,922.71/11,905.46
6. Step 6: Final answer
   x = 12,822.18