Finding the Fourth Proportional to 11,689.48, 16,131.81 and 6,384.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.48 : 16,131.81 = 6,384.37 : x
2. Step 2: Convert to fraction form
   11,689.48/16,131.81 = 6,384.37/x
3. Step 3: Cross multiply
   11,689.48x = 16,131.81 × 6,384.37
4. Step 4: Simplify right side
   11,689.48x = 102,991,443.81
5. Step 5: Solve for x
   x = 102,991,443.81/11,689.48
6. Step 6: Final answer
   x = 8,810.61