Finding the Fourth Proportional to 5,419.48, 8,111.86 and 2,917.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.48 : 8,111.86 = 2,917.16 : x
2. Step 2: Convert to fraction form
   5,419.48/8,111.86 = 2,917.16/x
3. Step 3: Cross multiply
   5,419.48x = 8,111.86 × 2,917.16
4. Step 4: Simplify right side
   5,419.48x = 23,663,593.52
5. Step 5: Solve for x
   x = 23,663,593.52/5,419.48
6. Step 6: Final answer
   x = 4,366.40