Finding the Fourth Proportional to 11,648.21, 16,076.80 and 7,404.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,648.21 : 16,076.80 = 7,404.21 : x
2. Step 2: Convert to fraction form
   11,648.21/16,076.80 = 7,404.21/x
3. Step 3: Cross multiply
   11,648.21x = 16,076.80 × 7,404.21
4. Step 4: Simplify right side
   11,648.21x = 119,036,003.33
5. Step 5: Solve for x
   x = 119,036,003.33/11,648.21
6. Step 6: Final answer
   x = 10,219.25