Finding the Fourth Proportional to 21,111.03, 31,675.37 and 9,258.66

Step by Step Solution

1. Step 1: Write the proportion equation
   21,111.03 : 31,675.37 = 9,258.66 : x
2. Step 2: Convert to fraction form
   21,111.03/31,675.37 = 9,258.66/x
3. Step 3: Cross multiply
   21,111.03x = 31,675.37 × 9,258.66
4. Step 4: Simplify right side
   21,111.03x = 293,271,434.91
5. Step 5: Solve for x
   x = 293,271,434.91/21,111.03
6. Step 6: Final answer
   x = 13,891.86