Finding the Fourth Proportional to 30,956.05, 42,718.98 and 16,809.00

Step by Step Solution

1. Step 1: Write the proportion equation
   30,956.05 : 42,718.98 = 16,809.00 : x
2. Step 2: Convert to fraction form
   30,956.05/42,718.98 = 16,809.00/x
3. Step 3: Cross multiply
   30,956.05x = 42,718.98 × 16,809.00
4. Step 4: Simplify right side
   30,956.05x = 718,063,143.11
5. Step 5: Solve for x
   x = 718,063,143.11/30,956.05
6. Step 6: Final answer
   x = 23,196.21