Finding the Fourth Proportional to 6,124.31, 8,448.20 and 3,997.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,124.31 : 8,448.20 = 3,997.15 : x
2. Step 2: Convert to fraction form
   6,124.31/8,448.20 = 3,997.15/x
3. Step 3: Cross multiply
   6,124.31x = 8,448.20 × 3,997.15
4. Step 4: Simplify right side
   6,124.31x = 33,768,696.51
5. Step 5: Solve for x
   x = 33,768,696.51/6,124.31
6. Step 6: Final answer
   x = 5,513.88