Finding the Fourth Proportional to 21,983.96, 30,343.32 and 12,558.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,983.96 : 30,343.32 = 12,558.02 : x
2. Step 2: Convert to fraction form
   21,983.96/30,343.32 = 12,558.02/x
3. Step 3: Cross multiply
   21,983.96x = 30,343.32 × 12,558.02
4. Step 4: Simplify right side
   21,983.96x = 381,052,019.43
5. Step 5: Solve for x
   x = 381,052,019.43/21,983.96
6. Step 6: Final answer
   x = 17,333.18