Finding the Fourth Proportional to 3,878.72, 5,347.69 and 2,513.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.72 : 5,347.69 = 2,513.58 : x
2. Step 2: Convert to fraction form
   3,878.72/5,347.69 = 2,513.58/x
3. Step 3: Cross multiply
   3,878.72x = 5,347.69 × 2,513.58
4. Step 4: Simplify right side
   3,878.72x = 13,441,846.63
5. Step 5: Solve for x
   x = 13,441,846.63/3,878.72
6. Step 6: Final answer
   x = 3,465.54