Finding the Fourth Proportional to 30,955.74, 42,719.31 and 16,808.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,955.74 : 42,719.31 = 16,808.82 : x
2. Step 2: Convert to fraction form
   30,955.74/42,719.31 = 16,808.82/x
3. Step 3: Cross multiply
   30,955.74x = 42,719.31 × 16,808.82
4. Step 4: Simplify right side
   30,955.74x = 718,061,192.31
5. Step 5: Solve for x
   x = 718,061,192.31/30,955.74
6. Step 6: Final answer
   x = 23,196.38