Finding the Fourth Proportional to 10,015.90, 13,822.31 and 5,539.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,015.90 : 13,822.31 = 5,539.69 : x
2. Step 2: Convert to fraction form
   10,015.90/13,822.31 = 5,539.69/x
3. Step 3: Cross multiply
   10,015.90x = 13,822.31 × 5,539.69
4. Step 4: Simplify right side
   10,015.90x = 76,571,285.27
5. Step 5: Solve for x
   x = 76,571,285.27/10,015.90
6. Step 6: Final answer
   x = 7,644.97