Finding the Fourth Proportional to 22,080.96, 30,463.56 and 13,128.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,080.96 : 30,463.56 = 13,128.84 : x
2. Step 2: Convert to fraction form
   22,080.96/30,463.56 = 13,128.84/x
3. Step 3: Cross multiply
   22,080.96x = 30,463.56 × 13,128.84
4. Step 4: Simplify right side
   22,080.96x = 399,951,205.07
5. Step 5: Solve for x
   x = 399,951,205.07/22,080.96
6. Step 6: Final answer
   x = 18,112.94