Finding the Fourth Proportional to 10,621.57, 14,658.29 and 5,905.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,621.57 : 14,658.29 = 5,905.75 : x
2. Step 2: Convert to fraction form
   10,621.57/14,658.29 = 5,905.75/x
3. Step 3: Cross multiply
   10,621.57x = 14,658.29 × 5,905.75
4. Step 4: Simplify right side
   10,621.57x = 86,568,196.17
5. Step 5: Solve for x
   x = 86,568,196.17/10,621.57
6. Step 6: Final answer
   x = 8,150.23