Finding the Fourth Proportional to 6,300.48, 8,685.34 and 4,031.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,300.48 : 8,685.34 = 4,031.57 : x
2. Step 2: Convert to fraction form
   6,300.48/8,685.34 = 4,031.57/x
3. Step 3: Cross multiply
   6,300.48x = 8,685.34 × 4,031.57
4. Step 4: Simplify right side
   6,300.48x = 35,015,590.50
5. Step 5: Solve for x
   x = 35,015,590.50/6,300.48
6. Step 6: Final answer
   x = 5,557.60