Finding the Fourth Proportional to 8,973.20, 13,449.89 and 3,705.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,973.20 : 13,449.89 = 3,705.31 : x
2. Step 2: Convert to fraction form
   8,973.20/13,449.89 = 3,705.31/x
3. Step 3: Cross multiply
   8,973.20x = 13,449.89 × 3,705.31
4. Step 4: Simplify right side
   8,973.20x = 49,835,987.55
5. Step 5: Solve for x
   x = 49,835,987.55/8,973.20
6. Step 6: Final answer
   x = 5,553.87