Finding the Fourth Proportional to 9,209.91, 12,709.76 and 5,018.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,209.91 : 12,709.76 = 5,018.43 : x
2. Step 2: Convert to fraction form
   9,209.91/12,709.76 = 5,018.43/x
3. Step 3: Cross multiply
   9,209.91x = 12,709.76 × 5,018.43
4. Step 4: Simplify right side
   9,209.91x = 63,783,015.78
5. Step 5: Solve for x
   x = 63,783,015.78/9,209.91
6. Step 6: Final answer
   x = 6,925.48