Finding the Fourth Proportional to 3,917.69, 5,407.32 and 2,518.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,917.69 : 5,407.32 = 2,518.01 : x
2. Step 2: Convert to fraction form
   3,917.69/5,407.32 = 2,518.01/x
3. Step 3: Cross multiply
   3,917.69x = 5,407.32 × 2,518.01
4. Step 4: Simplify right side
   3,917.69x = 13,615,646.21
5. Step 5: Solve for x
   x = 13,615,646.21/3,917.69
6. Step 6: Final answer
   x = 3,475.43