Finding the Fourth Proportional to 10,854.80, 16,233.40 and 7,930.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,854.80 : 16,233.40 = 7,930.16 : x
2. Step 2: Convert to fraction form
   10,854.80/16,233.40 = 7,930.16/x
3. Step 3: Cross multiply
   10,854.80x = 16,233.40 × 7,930.16
4. Step 4: Simplify right side
   10,854.80x = 128,733,459.34
5. Step 5: Solve for x
   x = 128,733,459.34/10,854.80
6. Step 6: Final answer
   x = 11,859.59