Finding the Fourth Proportional to 10,081.28, 13,911.86 and 5,543.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.28 : 13,911.86 = 5,543.94 : x
2. Step 2: Convert to fraction form
   10,081.28/13,911.86 = 5,543.94/x
3. Step 3: Cross multiply
   10,081.28x = 13,911.86 × 5,543.94
4. Step 4: Simplify right side
   10,081.28x = 77,126,489.41
5. Step 5: Solve for x
   x = 77,126,489.41/10,081.28
6. Step 6: Final answer
   x = 7,650.47