Finding the Fourth Proportional to 10,065.24, 13,890.24 and 5,528.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,065.24 : 13,890.24 = 5,528.12 : x
2. Step 2: Convert to fraction form
   10,065.24/13,890.24 = 5,528.12/x
3. Step 3: Cross multiply
   10,065.24x = 13,890.24 × 5,528.12
4. Step 4: Simplify right side
   10,065.24x = 76,786,844.10
5. Step 5: Solve for x
   x = 76,786,844.10/10,065.24
6. Step 6: Final answer
   x = 7,628.91