Finding the Fourth Proportional to 10,257.52, 14,155.37 and 5,541.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,257.52 : 14,155.37 = 5,541.80 : x
2. Step 2: Convert to fraction form
   10,257.52/14,155.37 = 5,541.80/x
3. Step 3: Cross multiply
   10,257.52x = 14,155.37 × 5,541.80
4. Step 4: Simplify right side
   10,257.52x = 78,446,229.47
5. Step 5: Solve for x
   x = 78,446,229.47/10,257.52
6. Step 6: Final answer
   x = 7,647.68