Finding the Fourth Proportional to 11,873.82, 16,390.89 and 7,399.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,873.82 : 16,390.89 = 7,399.77 : x
2. Step 2: Convert to fraction form
   11,873.82/16,390.89 = 7,399.77/x
3. Step 3: Cross multiply
   11,873.82x = 16,390.89 × 7,399.77
4. Step 4: Simplify right side
   11,873.82x = 121,288,816.10
5. Step 5: Solve for x
   x = 121,288,816.10/11,873.82
6. Step 6: Final answer
   x = 10,214.81