Finding the Fourth Proportional to 22,448.56, 30,980.86 and 12,378.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.56 : 30,980.86 = 12,378.98 : x
2. Step 2: Convert to fraction form
   22,448.56/30,980.86 = 12,378.98/x
3. Step 3: Cross multiply
   22,448.56x = 30,980.86 × 12,378.98
4. Step 4: Simplify right side
   22,448.56x = 383,511,260.47
5. Step 5: Solve for x
   x = 383,511,260.47/22,448.56
6. Step 6: Final answer
   x = 17,084.00