Finding the Fourth Proportional to 5,509.37, 7,617.89 and 5,420.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,509.37 : 7,617.89 = 5,420.34 : x
2. Step 2: Convert to fraction form
   5,509.37/7,617.89 = 5,420.34/x
3. Step 3: Cross multiply
   5,509.37x = 7,617.89 × 5,420.34
4. Step 4: Simplify right side
   5,509.37x = 41,291,526.78
5. Step 5: Solve for x
   x = 41,291,526.78/5,509.37
6. Step 6: Final answer
   x = 7,494.79