Finding the Fourth Proportional to 10,628.30, 14,667.12 and 5,912.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,628.30 : 14,667.12 = 5,912.88 : x
2. Step 2: Convert to fraction form
   10,628.30/14,667.12 = 5,912.88/x
3. Step 3: Cross multiply
   10,628.30x = 14,667.12 × 5,912.88
4. Step 4: Simplify right side
   10,628.30x = 86,724,920.51
5. Step 5: Solve for x
   x = 86,724,920.51/10,628.30
6. Step 6: Final answer
   x = 8,159.81