Finding the Fourth Proportional to 8,838.05, 12,185.17 and 7,238.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,838.05 : 12,185.17 = 7,238.80 : x
2. Step 2: Convert to fraction form
   8,838.05/12,185.17 = 7,238.80/x
3. Step 3: Cross multiply
   8,838.05x = 12,185.17 × 7,238.80
4. Step 4: Simplify right side
   8,838.05x = 88,206,005.73
5. Step 5: Solve for x
   x = 88,206,005.73/8,838.05
6. Step 6: Final answer
   x = 9,980.26