Finding the Fourth Proportional to 22,449.82, 30,980.96 and 12,378.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,449.82 : 30,980.96 = 12,378.62 : x
2. Step 2: Convert to fraction form
   22,449.82/30,980.96 = 12,378.62/x
3. Step 3: Cross multiply
   22,449.82x = 30,980.96 × 12,378.62
4. Step 4: Simplify right side
   22,449.82x = 383,501,639.47
5. Step 5: Solve for x
   x = 383,501,639.47/22,449.82
6. Step 6: Final answer
   x = 17,082.62