Finding the Fourth Proportional to 10,019.62, 13,826.78 and 5,543.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,019.62 : 13,826.78 = 5,543.11 : x
2. Step 2: Convert to fraction form
   10,019.62/13,826.78 = 5,543.11/x
3. Step 3: Cross multiply
   10,019.62x = 13,826.78 × 5,543.11
4. Step 4: Simplify right side
   10,019.62x = 76,643,334.77
5. Step 5: Solve for x
   x = 76,643,334.77/10,019.62
6. Step 6: Final answer
   x = 7,649.33