Finding the Fourth Proportional to 3,947.10, 5,915.00 and 2,898.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.10 : 5,915.00 = 2,898.87 : x
2. Step 2: Convert to fraction form
   3,947.10/5,915.00 = 2,898.87/x
3. Step 3: Cross multiply
   3,947.10x = 5,915.00 × 2,898.87
4. Step 4: Simplify right side
   3,947.10x = 17,146,801.56
5. Step 5: Solve for x
   x = 17,146,801.56/3,947.10
6. Step 6: Final answer
   x = 4,344.15