Finding the Fourth Proportional to 9,879.31, 14,824.81 and 3,643.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,879.31 : 14,824.81 = 3,643.71 : x
2. Step 2: Convert to fraction form
   9,879.31/14,824.81 = 3,643.71/x
3. Step 3: Cross multiply
   9,879.31x = 14,824.81 × 3,643.71
4. Step 4: Simplify right side
   9,879.31x = 54,017,234.32
5. Step 5: Solve for x
   x = 54,017,234.32/9,879.31
6. Step 6: Final answer
   x = 5,467.71