Finding the Fourth Proportional to 21,404.55, 29,538.31 and 11,844.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,404.55 : 29,538.31 = 11,844.84 : x
2. Step 2: Convert to fraction form
   21,404.55/29,538.31 = 11,844.84/x
3. Step 3: Cross multiply
   21,404.55x = 29,538.31 × 11,844.84
4. Step 4: Simplify right side
   21,404.55x = 349,876,609.42
5. Step 5: Solve for x
   x = 349,876,609.42/21,404.55
6. Step 6: Final answer
   x = 16,345.90