Finding the Fourth Proportional to 6,309.86, 8,707.05 and 3,656.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.86 : 8,707.05 = 3,656.42 : x
2. Step 2: Convert to fraction form
   6,309.86/8,707.05 = 3,656.42/x
3. Step 3: Cross multiply
   6,309.86x = 8,707.05 × 3,656.42
4. Step 4: Simplify right side
   6,309.86x = 31,836,631.76
5. Step 5: Solve for x
   x = 31,836,631.76/6,309.86
6. Step 6: Final answer
   x = 5,045.54