Finding the Fourth Proportional to 21,103.12, 31,656.35 and 7,063.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,103.12 : 31,656.35 = 7,063.21 : x
2. Step 2: Convert to fraction form
   21,103.12/31,656.35 = 7,063.21/x
3. Step 3: Cross multiply
   21,103.12x = 31,656.35 × 7,063.21
4. Step 4: Simplify right side
   21,103.12x = 223,595,447.88
5. Step 5: Solve for x
   x = 223,595,447.88/21,103.12
6. Step 6: Final answer
   x = 10,595.37