Finding the Fourth Proportional to 3,887.48, 5,365.20 and 2,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.48 : 5,365.20 = 2,315.52 : x
2. Step 2: Convert to fraction form
   3,887.48/5,365.20 = 2,315.52/x
3. Step 3: Cross multiply
   3,887.48x = 5,365.20 × 2,315.52
4. Step 4: Simplify right side
   3,887.48x = 12,423,227.90
5. Step 5: Solve for x
   x = 12,423,227.90/3,887.48
6. Step 6: Final answer
   x = 3,195.70