Finding the Fourth Proportional to 7,124.77, 10,689.31 and 5,048.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,124.77 : 10,689.31 = 5,048.79 : x
2. Step 2: Convert to fraction form
   7,124.77/10,689.31 = 5,048.79/x
3. Step 3: Cross multiply
   7,124.77x = 10,689.31 × 5,048.79
4. Step 4: Simplify right side
   7,124.77x = 53,968,073.64
5. Step 5: Solve for x
   x = 53,968,073.64/7,124.77
6. Step 6: Final answer
   x = 7,574.71