Finding the Fourth Proportional to 10,935.30, 16,398.86 and 5,087.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,935.30 : 16,398.86 = 5,087.81 : x
2. Step 2: Convert to fraction form
   10,935.30/16,398.86 = 5,087.81/x
3. Step 3: Cross multiply
   10,935.30x = 16,398.86 × 5,087.81
4. Step 4: Simplify right side
   10,935.30x = 83,434,299.45
5. Step 5: Solve for x
   x = 83,434,299.45/10,935.30
6. Step 6: Final answer
   x = 7,629.81