Finding the Fourth Proportional to 10,147.71, 14,005.16 and 5,672.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.71 : 14,005.16 = 5,672.40 : x
2. Step 2: Convert to fraction form
   10,147.71/14,005.16 = 5,672.40/x
3. Step 3: Cross multiply
   10,147.71x = 14,005.16 × 5,672.40
4. Step 4: Simplify right side
   10,147.71x = 79,442,869.58
5. Step 5: Solve for x
   x = 79,442,869.58/10,147.71
6. Step 6: Final answer
   x = 7,828.65