Finding the Fourth Proportional to 21,741.47, 30,003.72 and 12,182.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,741.47 : 30,003.72 = 12,182.07 : x
2. Step 2: Convert to fraction form
   21,741.47/30,003.72 = 12,182.07/x
3. Step 3: Cross multiply
   21,741.47x = 30,003.72 × 12,182.07
4. Step 4: Simplify right side
   21,741.47x = 365,507,356.39
5. Step 5: Solve for x
   x = 365,507,356.39/21,741.47
6. Step 6: Final answer
   x = 16,811.53