Finding the Fourth Proportional to 30,970.10, 42,738.72 and 16,822.93

Step by Step Solution

1. Step 1: Write the proportion equation
   30,970.10 : 42,738.72 = 16,822.93 : x
2. Step 2: Convert to fraction form
   30,970.10/42,738.72 = 16,822.93/x
3. Step 3: Cross multiply
   30,970.10x = 42,738.72 × 16,822.93
4. Step 4: Simplify right side
   30,970.10x = 718,990,494.85
5. Step 5: Solve for x
   x = 718,990,494.85/30,970.10
6. Step 6: Final answer
   x = 23,215.63