Finding the Fourth Proportional to 10,148.85, 14,005.49 and 5,672.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,148.85 : 14,005.49 = 5,672.79 : x
2. Step 2: Convert to fraction form
   10,148.85/14,005.49 = 5,672.79/x
3. Step 3: Cross multiply
   10,148.85x = 14,005.49 × 5,672.79
4. Step 4: Simplify right side
   10,148.85x = 79,450,175.25
5. Step 5: Solve for x
   x = 79,450,175.25/10,148.85
6. Step 6: Final answer
   x = 7,828.49