Finding the Fourth Proportional to 22,326.84, 30,814.83 and 12,900.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,326.84 : 30,814.83 = 12,900.87 : x
2. Step 2: Convert to fraction form
   22,326.84/30,814.83 = 12,900.87/x
3. Step 3: Cross multiply
   22,326.84x = 30,814.83 × 12,900.87
4. Step 4: Simplify right side
   22,326.84x = 397,538,115.90
5. Step 5: Solve for x
   x = 397,538,115.90/22,326.84
6. Step 6: Final answer
   x = 17,805.39