Finding the Fourth Proportional to 6,864.71, 9,473.25 and 3,720.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,864.71 : 9,473.25 = 3,720.89 : x
2. Step 2: Convert to fraction form
   6,864.71/9,473.25 = 3,720.89/x
3. Step 3: Cross multiply
   6,864.71x = 9,473.25 × 3,720.89
4. Step 4: Simplify right side
   6,864.71x = 35,248,958.83
5. Step 5: Solve for x
   x = 35,248,958.83/6,864.71
6. Step 6: Final answer
   x = 5,134.81