Finding the Fourth Proportional to 9,905.09, 14,859.27 and 3,665.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,905.09 : 14,859.27 = 3,665.12 : x
2. Step 2: Convert to fraction form
   9,905.09/14,859.27 = 3,665.12/x
3. Step 3: Cross multiply
   9,905.09x = 14,859.27 × 3,665.12
4. Step 4: Simplify right side
   9,905.09x = 54,461,007.66
5. Step 5: Solve for x
   x = 54,461,007.66/9,905.09
6. Step 6: Final answer
   x = 5,498.28