Finding the Fourth Proportional to 21,803.63, 30,089.33 and 12,245.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,803.63 : 30,089.33 = 12,245.59 : x
2. Step 2: Convert to fraction form
   21,803.63/30,089.33 = 12,245.59/x
3. Step 3: Cross multiply
   21,803.63x = 30,089.33 × 12,245.59
4. Step 4: Simplify right side
   21,803.63x = 368,461,508.02
5. Step 5: Solve for x
   x = 368,461,508.02/21,803.63
6. Step 6: Final answer
   x = 16,899.09