Finding the Fourth Proportional to 11,873.34, 16,398.18 and 7,911.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,873.34 : 16,398.18 = 7,911.27 : x
2. Step 2: Convert to fraction form
   11,873.34/16,398.18 = 7,911.27/x
3. Step 3: Cross multiply
   11,873.34x = 16,398.18 × 7,911.27
4. Step 4: Simplify right side
   11,873.34x = 129,730,429.49
5. Step 5: Solve for x
   x = 129,730,429.49/11,873.34
6. Step 6: Final answer
   x = 10,926.20