Finding the Fourth Proportional to 10,628.14, 14,667.72 and 5,913.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,628.14 : 14,667.72 = 5,913.31 : x
2. Step 2: Convert to fraction form
   10,628.14/14,667.72 = 5,913.31/x
3. Step 3: Cross multiply
   10,628.14x = 14,667.72 × 5,913.31
4. Step 4: Simplify right side
   10,628.14x = 86,734,775.35
5. Step 5: Solve for x
   x = 86,734,775.35/10,628.14
6. Step 6: Final answer
   x = 8,160.86