Finding the Fourth Proportional to 6,224.31, 8,587.71 and 3,705.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,224.31 : 8,587.71 = 3,705.15 : x
2. Step 2: Convert to fraction form
   6,224.31/8,587.71 = 3,705.15/x
3. Step 3: Cross multiply
   6,224.31x = 8,587.71 × 3,705.15
4. Step 4: Simplify right side
   6,224.31x = 31,818,753.71
5. Step 5: Solve for x
   x = 31,818,753.71/6,224.31
6. Step 6: Final answer
   x = 5,112.01