Finding the Fourth Proportional to 10,007.57, 13,809.48 and 5,530.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.57 : 13,809.48 = 5,530.59 : x
2. Step 2: Convert to fraction form
   10,007.57/13,809.48 = 5,530.59/x
3. Step 3: Cross multiply
   10,007.57x = 13,809.48 × 5,530.59
4. Step 4: Simplify right side
   10,007.57x = 76,374,571.99
5. Step 5: Solve for x
   x = 76,374,571.99/10,007.57
6. Step 6: Final answer
   x = 7,631.68