Finding the Fourth Proportional to 5,300.61, 7,317.17 and 3,512.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.61 : 7,317.17 = 3,512.80 : x
2. Step 2: Convert to fraction form
   5,300.61/7,317.17 = 3,512.80/x
3. Step 3: Cross multiply
   5,300.61x = 7,317.17 × 3,512.80
4. Step 4: Simplify right side
   5,300.61x = 25,703,754.78
5. Step 5: Solve for x
   x = 25,703,754.78/5,300.61
6. Step 6: Final answer
   x = 4,849.21