Finding the Fourth Proportional to 10,020.22, 13,828.31 and 5,543.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,020.22 : 13,828.31 = 5,543.90 : x
2. Step 2: Convert to fraction form
   10,020.22/13,828.31 = 5,543.90/x
3. Step 3: Cross multiply
   10,020.22x = 13,828.31 × 5,543.90
4. Step 4: Simplify right side
   10,020.22x = 76,662,757.45
5. Step 5: Solve for x
   x = 76,662,757.45/10,020.22
6. Step 6: Final answer
   x = 7,650.81