Finding the Fourth Proportional to 22,458.08, 30,993.57 and 12,900.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,458.08 : 30,993.57 = 12,900.96 : x
2. Step 2: Convert to fraction form
   22,458.08/30,993.57 = 12,900.96/x
3. Step 3: Cross multiply
   22,458.08x = 30,993.57 × 12,900.96
4. Step 4: Simplify right side
   22,458.08x = 399,846,806.83
5. Step 5: Solve for x
   x = 399,846,806.83/22,458.08
6. Step 6: Final answer
   x = 17,804.14