Finding the Fourth Proportional to 5,116.52, 7,061.60 and 3,128.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,116.52 : 7,061.60 = 3,128.24 : x
2. Step 2: Convert to fraction form
   5,116.52/7,061.60 = 3,128.24/x
3. Step 3: Cross multiply
   5,116.52x = 7,061.60 × 3,128.24
4. Step 4: Simplify right side
   5,116.52x = 22,090,379.58
5. Step 5: Solve for x
   x = 22,090,379.58/5,116.52
6. Step 6: Final answer
   x = 4,317.46