Finding the Fourth Proportional to 5,869.89, 8,100.72 and 3,217.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,869.89 : 8,100.72 = 3,217.50 : x
2. Step 2: Convert to fraction form
   5,869.89/8,100.72 = 3,217.50/x
3. Step 3: Cross multiply
   5,869.89x = 8,100.72 × 3,217.50
4. Step 4: Simplify right side
   5,869.89x = 26,064,066.60
5. Step 5: Solve for x
   x = 26,064,066.60/5,869.89
6. Step 6: Final answer
   x = 4,440.30