Finding the Fourth Proportional to 30,833.21, 42,549.82 and 16,686.05

Step by Step Solution

1. Step 1: Write the proportion equation
   30,833.21 : 42,549.82 = 16,686.05 : x
2. Step 2: Convert to fraction form
   30,833.21/42,549.82 = 16,686.05/x
3. Step 3: Cross multiply
   30,833.21x = 42,549.82 × 16,686.05
4. Step 4: Simplify right side
   30,833.21x = 709,988,424.01
5. Step 5: Solve for x
   x = 709,988,424.01/30,833.21
6. Step 6: Final answer
   x = 23,026.74