Finding the Fourth Proportional to 22,449.47, 30,979.89 and 12,378.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,449.47 : 30,979.89 = 12,378.84 : x
2. Step 2: Convert to fraction form
   22,449.47/30,979.89 = 12,378.84/x
3. Step 3: Cross multiply
   22,449.47x = 30,979.89 × 12,378.84
4. Step 4: Simplify right side
   22,449.47x = 383,495,101.53
5. Step 5: Solve for x
   x = 383,495,101.53/22,449.47
6. Step 6: Final answer
   x = 17,082.59