Finding the Fourth Proportional to 28,071.83, 42,085.38 and 16,212.11

Step by Step Solution

1. Step 1: Write the proportion equation
   28,071.83 : 42,085.38 = 16,212.11 : x
2. Step 2: Convert to fraction form
   28,071.83/42,085.38 = 16,212.11/x
3. Step 3: Cross multiply
   28,071.83x = 42,085.38 × 16,212.11
4. Step 4: Simplify right side
   28,071.83x = 682,292,599.52
5. Step 5: Solve for x
   x = 682,292,599.52/28,071.83
6. Step 6: Final answer
   x = 24,305.25