Finding the Fourth Proportional to 7,496.48, 10,345.16 and 4,139.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,496.48 : 10,345.16 = 4,139.30 : x
2. Step 2: Convert to fraction form
   7,496.48/10,345.16 = 4,139.30/x
3. Step 3: Cross multiply
   7,496.48x = 10,345.16 × 4,139.30
4. Step 4: Simplify right side
   7,496.48x = 42,821,674.23
5. Step 5: Solve for x
   x = 42,821,674.23/7,496.48
6. Step 6: Final answer
   x = 5,712.24