Finding the Fourth Proportional to 6,221.59, 8,587.59 and 3,705.46

Step by Step Solution

1. Step 1: Write the proportion equation
   6,221.59 : 8,587.59 = 3,705.46 : x
2. Step 2: Convert to fraction form
   6,221.59/8,587.59 = 3,705.46/x
3. Step 3: Cross multiply
   6,221.59x = 8,587.59 × 3,705.46
4. Step 4: Simplify right side
   6,221.59x = 31,820,971.24
5. Step 5: Solve for x
   x = 31,820,971.24/6,221.59
6. Step 6: Final answer
   x = 5,114.60