Finding the Fourth Proportional to 11,875.09, 16,389.89 and 8,481.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,875.09 : 16,389.89 = 8,481.31 : x
2. Step 2: Convert to fraction form
   11,875.09/16,389.89 = 8,481.31/x
3. Step 3: Cross multiply
   11,875.09x = 16,389.89 × 8,481.31
4. Step 4: Simplify right side
   11,875.09x = 139,007,737.96
5. Step 5: Solve for x
   x = 139,007,737.96/11,875.09
6. Step 6: Final answer
   x = 11,705.83