Finding the Fourth Proportional to 3,947.48, 5,915.55 and 2,899.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.48 : 5,915.55 = 2,899.25 : x
2. Step 2: Convert to fraction form
   3,947.48/5,915.55 = 2,899.25/x
3. Step 3: Cross multiply
   3,947.48x = 5,915.55 × 2,899.25
4. Step 4: Simplify right side
   3,947.48x = 17,150,628.76
5. Step 5: Solve for x
   x = 17,150,628.76/3,947.48
6. Step 6: Final answer
   x = 4,344.71