Finding the Fourth Proportional to 10,028.20, 13,838.34 and 5,551.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,028.20 : 13,838.34 = 5,551.72 : x
2. Step 2: Convert to fraction form
   10,028.20/13,838.34 = 5,551.72/x
3. Step 3: Cross multiply
   10,028.20x = 13,838.34 × 5,551.72
4. Step 4: Simplify right side
   10,028.20x = 76,826,588.94
5. Step 5: Solve for x
   x = 76,826,588.94/10,028.20
6. Step 6: Final answer
   x = 7,661.05