Finding the Fourth Proportional to 11,892.42, 16,404.93 and 9,365.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.42 : 16,404.93 = 9,365.22 : x
2. Step 2: Convert to fraction form
   11,892.42/16,404.93 = 9,365.22/x
3. Step 3: Cross multiply
   11,892.42x = 16,404.93 × 9,365.22
4. Step 4: Simplify right side
   11,892.42x = 153,635,778.53
5. Step 5: Solve for x
   x = 153,635,778.53/11,892.42
6. Step 6: Final answer
   x = 12,918.80