Finding the Fourth Proportional to 21,103.87, 31,657.47 and 7,063.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,103.87 : 31,657.47 = 7,063.98 : x
2. Step 2: Convert to fraction form
   21,103.87/31,657.47 = 7,063.98/x
3. Step 3: Cross multiply
   21,103.87x = 31,657.47 × 7,063.98
4. Step 4: Simplify right side
   21,103.87x = 223,627,734.93
5. Step 5: Solve for x
   x = 223,627,734.93/21,103.87
6. Step 6: Final answer
   x = 10,596.53