Finding the Fourth Proportional to 10,231.72, 15,348.49 and 4,386.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,231.72 : 15,348.49 = 4,386.96 : x
2. Step 2: Convert to fraction form
   10,231.72/15,348.49 = 4,386.96/x
3. Step 3: Cross multiply
   10,231.72x = 15,348.49 × 4,386.96
4. Step 4: Simplify right side
   10,231.72x = 67,333,200.72
5. Step 5: Solve for x
   x = 67,333,200.72/10,231.72
6. Step 6: Final answer
   x = 6,580.83