Finding the Fourth Proportional to 21,613.36, 29,826.30 and 12,053.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613.36 : 29,826.30 = 12,053.36 : x
2. Step 2: Convert to fraction form
   21,613.36/29,826.30 = 12,053.36/x
3. Step 3: Cross multiply
   21,613.36x = 29,826.30 × 12,053.36
4. Step 4: Simplify right side
   21,613.36x = 359,507,131.37
5. Step 5: Solve for x
   x = 359,507,131.37/21,613.36
6. Step 6: Final answer
   x = 16,633.56