Finding the Fourth Proportional to 16,820.58, 23,211.48 and 9,265.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,820.58 : 23,211.48 = 9,265.43 : x
2. Step 2: Convert to fraction form
   16,820.58/23,211.48 = 9,265.43/x
3. Step 3: Cross multiply
   16,820.58x = 23,211.48 × 9,265.43
4. Step 4: Simplify right side
   16,820.58x = 215,064,435.91
5. Step 5: Solve for x
   x = 215,064,435.91/16,820.58
6. Step 6: Final answer
   x = 12,785.79