Finding the Fourth Proportional to 10,255.80, 14,153.01 and 5,540.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,255.80 : 14,153.01 = 5,540.08 : x
2. Step 2: Convert to fraction form
   10,255.80/14,153.01 = 5,540.08/x
3. Step 3: Cross multiply
   10,255.80x = 14,153.01 × 5,540.08
4. Step 4: Simplify right side
   10,255.80x = 78,408,807.64
5. Step 5: Solve for x
   x = 78,408,807.64/10,255.80
6. Step 6: Final answer
   x = 7,645.31