Finding the Fourth Proportional to 6,338.79, 8,746.47 and 3,686.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,338.79 : 8,746.47 = 3,686.31 : x
2. Step 2: Convert to fraction form
   6,338.79/8,746.47 = 3,686.31/x
3. Step 3: Cross multiply
   6,338.79x = 8,746.47 × 3,686.31
4. Step 4: Simplify right side
   6,338.79x = 32,242,199.83
5. Step 5: Solve for x
   x = 32,242,199.83/6,338.79
6. Step 6: Final answer
   x = 5,086.49