Finding the Fourth Proportional to 3,887.16, 5,364.72 and 2,315.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.16 : 5,364.72 = 2,315.22 : x
2. Step 2: Convert to fraction form
   3,887.16/5,364.72 = 2,315.22/x
3. Step 3: Cross multiply
   3,887.16x = 5,364.72 × 2,315.22
4. Step 4: Simplify right side
   3,887.16x = 12,420,507.04
5. Step 5: Solve for x
   x = 12,420,507.04/3,887.16
6. Step 6: Final answer
   x = 3,195.27