Finding the Fourth Proportional to 10,004.54, 13,805.89 and 5,528.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,004.54 : 13,805.89 = 5,528.19 : x
2. Step 2: Convert to fraction form
   10,004.54/13,805.89 = 5,528.19/x
3. Step 3: Cross multiply
   10,004.54x = 13,805.89 × 5,528.19
4. Step 4: Simplify right side
   10,004.54x = 76,321,620.99
5. Step 5: Solve for x
   x = 76,321,620.99/10,004.54
6. Step 6: Final answer
   x = 7,628.70