Finding the Fourth Proportional to 7,557.80, 10,424.58 and 7,419.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,557.80 : 10,424.58 = 7,419.56 : x
2. Step 2: Convert to fraction form
   7,557.80/10,424.58 = 7,419.56/x
3. Step 3: Cross multiply
   7,557.80x = 10,424.58 × 7,419.56
4. Step 4: Simplify right side
   7,557.80x = 77,345,796.78
5. Step 5: Solve for x
   x = 77,345,796.78/7,557.80
6. Step 6: Final answer
   x = 10,233.90