Finding the Fourth Proportional to 21,484.31, 29,648.56 and 12,053.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,484.31 : 29,648.56 = 12,053.08 : x
2. Step 2: Convert to fraction form
   21,484.31/29,648.56 = 12,053.08/x
3. Step 3: Cross multiply
   21,484.31x = 29,648.56 × 12,053.08
4. Step 4: Simplify right side
   21,484.31x = 357,356,361.31
5. Step 5: Solve for x
   x = 357,356,361.31/21,484.31
6. Step 6: Final answer
   x = 16,633.36