Finding the Fourth Proportional to 11,685.05, 16,116.47 and 7,436.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,685.05 : 16,116.47 = 7,436.81 : x
2. Step 2: Convert to fraction form
   11,685.05/16,116.47 = 7,436.81/x
3. Step 3: Cross multiply
   11,685.05x = 16,116.47 × 7,436.81
4. Step 4: Simplify right side
   11,685.05x = 119,855,088.08
5. Step 5: Solve for x
   x = 119,855,088.08/11,685.05
6. Step 6: Final answer
   x = 10,257.13