Finding the Fourth Proportional to 11,905.02, 17,884.89 and 8,403.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,905.02 : 17,884.89 = 8,403.09 : x
2. Step 2: Convert to fraction form
   11,905.02/17,884.89 = 8,403.09/x
3. Step 3: Cross multiply
   11,905.02x = 17,884.89 × 8,403.09
4. Step 4: Simplify right side
   11,905.02x = 150,288,340.31
5. Step 5: Solve for x
   x = 150,288,340.31/11,905.02
6. Step 6: Final answer
   x = 12,623.95