Finding the Fourth Proportional to 22,448, 30,978 and 12,376.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448 : 30,978 = 12,376.84 : x
2. Step 2: Convert to fraction form
   22,448/30,978 = 12,376.84/x
3. Step 3: Cross multiply
   22,448x = 30,978 × 12,376.84
4. Step 4: Simplify right side
   22,448x = 383,409,749.52
5. Step 5: Solve for x
   x = 383,409,749.52/22,448
6. Step 6: Final answer
   x = 17,079.91