Finding the Fourth Proportional to 10,900.94, 16,351.56 and 3,109.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,900.94 : 16,351.56 = 3,109.75 : x
2. Step 2: Convert to fraction form
   10,900.94/16,351.56 = 3,109.75/x
3. Step 3: Cross multiply
   10,900.94x = 16,351.56 × 3,109.75
4. Step 4: Simplify right side
   10,900.94x = 50,849,263.71
5. Step 5: Solve for x
   x = 50,849,263.71/10,900.94
6. Step 6: Final answer
   x = 4,664.67