Finding the Fourth Proportional to 5,182.47, 7,152.28 and 2,945.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,182.47 : 7,152.28 = 2,945.05 : x
2. Step 2: Convert to fraction form
   5,182.47/7,152.28 = 2,945.05/x
3. Step 3: Cross multiply
   5,182.47x = 7,152.28 × 2,945.05
4. Step 4: Simplify right side
   5,182.47x = 21,063,796.97
5. Step 5: Solve for x
   x = 21,063,796.97/5,182.47
6. Step 6: Final answer
   x = 4,064.43