Finding the Fourth Proportional to 16,939.58, 23,374.32 and 9,384.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,939.58 : 23,374.32 = 9,384.05 : x
2. Step 2: Convert to fraction form
   16,939.58/23,374.32 = 9,384.05/x
3. Step 3: Cross multiply
   16,939.58x = 23,374.32 × 9,384.05
4. Step 4: Simplify right side
   16,939.58x = 219,345,863.63
5. Step 5: Solve for x
   x = 219,345,863.63/16,939.58
6. Step 6: Final answer
   x = 12,948.72