Finding the Fourth Proportional to 21,063.83, 29,067.48 and 13,885.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,063.83 : 29,067.48 = 13,885.01 : x
2. Step 2: Convert to fraction form
   21,063.83/29,067.48 = 13,885.01/x
3. Step 3: Cross multiply
   21,063.83x = 29,067.48 × 13,885.01
4. Step 4: Simplify right side
   21,063.83x = 403,602,105.14
5. Step 5: Solve for x
   x = 403,602,105.14/21,063.83
6. Step 6: Final answer
   x = 19,160.91