Finding the Fourth Proportional to 10,004.45, 13,805.95 and 5,528.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,004.45 : 13,805.95 = 5,528.11 : x
2. Step 2: Convert to fraction form
   10,004.45/13,805.95 = 5,528.11/x
3. Step 3: Cross multiply
   10,004.45x = 13,805.95 × 5,528.11
4. Step 4: Simplify right side
   10,004.45x = 76,320,789.56
5. Step 5: Solve for x
   x = 76,320,789.56/10,004.45
6. Step 6: Final answer
   x = 7,628.68