Finding the Fourth Proportional to 5,561.36, 7,630.83 and 5,509.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,561.36 : 7,630.83 = 5,509.12 : x
2. Step 2: Convert to fraction form
   5,561.36/7,630.83 = 5,509.12/x
3. Step 3: Cross multiply
   5,561.36x = 7,630.83 × 5,509.12
4. Step 4: Simplify right side
   5,561.36x = 42,039,158.17
5. Step 5: Solve for x
   x = 42,039,158.17/5,561.36
6. Step 6: Final answer
   x = 7,559.15