Finding the Fourth Proportional to 8,869.47, 12,233.72 and 7,190.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,869.47 : 12,233.72 = 7,190.94 : x
2. Step 2: Convert to fraction form
   8,869.47/12,233.72 = 7,190.94/x
3. Step 3: Cross multiply
   8,869.47x = 12,233.72 × 7,190.94
4. Step 4: Simplify right side
   8,869.47x = 87,971,910.54
5. Step 5: Solve for x
   x = 87,971,910.54/8,869.47
6. Step 6: Final answer
   x = 9,918.51