Finding the Fourth Proportional to 21,111.58, 31,651.64 and 7,063.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,111.58 : 31,651.64 = 7,063.30 : x
2. Step 2: Convert to fraction form
   21,111.58/31,651.64 = 7,063.30/x
3. Step 3: Cross multiply
   21,111.58x = 31,651.64 × 7,063.30
4. Step 4: Simplify right side
   21,111.58x = 223,565,028.81
5. Step 5: Solve for x
   x = 223,565,028.81/21,111.58
6. Step 6: Final answer
   x = 10,589.69