Finding the Fourth Proportional to 8,979.47, 12,391.69 and 5,203.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,979.47 : 12,391.69 = 5,203.37 : x
2. Step 2: Convert to fraction form
   8,979.47/12,391.69 = 5,203.37/x
3. Step 3: Cross multiply
   8,979.47x = 12,391.69 × 5,203.37
4. Step 4: Simplify right side
   8,979.47x = 64,478,506.02
5. Step 5: Solve for x
   x = 64,478,506.02/8,979.47
6. Step 6: Final answer
   x = 7,180.65