Finding the Fourth Proportional to 16,899.74, 23,321.76 and 9,243.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,899.74 : 23,321.76 = 9,243.05 : x
2. Step 2: Convert to fraction form
   16,899.74/23,321.76 = 9,243.05/x
3. Step 3: Cross multiply
   16,899.74x = 23,321.76 × 9,243.05
4. Step 4: Simplify right side
   16,899.74x = 215,564,193.77
5. Step 5: Solve for x
   x = 215,564,193.77/16,899.74
6. Step 6: Final answer
   x = 12,755.47