Finding the Fourth Proportional to 5,142.47, 7,092.29 and 3,152.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.47 : 7,092.29 = 3,152.30 : x
2. Step 2: Convert to fraction form
   5,142.47/7,092.29 = 3,152.30/x
3. Step 3: Cross multiply
   5,142.47x = 7,092.29 × 3,152.30
4. Step 4: Simplify right side
   5,142.47x = 22,356,974.54
5. Step 5: Solve for x
   x = 22,356,974.54/5,142.47
6. Step 6: Final answer
   x = 4,347.52