Finding the Fourth Proportional to 21,807.23, 30,091.59 and 12,245.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,807.23 : 30,091.59 = 12,245.18 : x
2. Step 2: Convert to fraction form
   21,807.23/30,091.59 = 12,245.18/x
3. Step 3: Cross multiply
   21,807.23x = 30,091.59 × 12,245.18
4. Step 4: Simplify right side
   21,807.23x = 368,477,011.27
5. Step 5: Solve for x
   x = 368,477,011.27/21,807.23
6. Step 6: Final answer
   x = 16,897.01