Finding the Fourth Proportional to 10,078.86, 13,909.00 and 5,541.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.86 : 13,909.00 = 5,541.73 : x
2. Step 2: Convert to fraction form
   10,078.86/13,909.00 = 5,541.73/x
3. Step 3: Cross multiply
   10,078.86x = 13,909.00 × 5,541.73
4. Step 4: Simplify right side
   10,078.86x = 77,079,962.57
5. Step 5: Solve for x
   x = 77,079,962.57/10,078.86
6. Step 6: Final answer
   x = 7,647.68