Finding the Fourth Proportional to 10,906.50, 16,368.02 and 7,992.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.50 : 16,368.02 = 7,992.42 : x
2. Step 2: Convert to fraction form
   10,906.50/16,368.02 = 7,992.42/x
3. Step 3: Cross multiply
   10,906.50x = 16,368.02 × 7,992.42
4. Step 4: Simplify right side
   10,906.50x = 130,820,090.41
5. Step 5: Solve for x
   x = 130,820,090.41/10,906.50
6. Step 6: Final answer
   x = 11,994.69