Finding the Fourth Proportional to 10,903, 16,354.66 and 3,111.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,903 : 16,354.66 = 3,111.81 : x
2. Step 2: Convert to fraction form
   10,903/16,354.66 = 3,111.81/x
3. Step 3: Cross multiply
   10,903x = 16,354.66 × 3,111.81
4. Step 4: Simplify right side
   10,903x = 50,892,594.53
5. Step 5: Solve for x
   x = 50,892,594.53/10,903
6. Step 6: Final answer
   x = 4,667.76