Finding the Fourth Proportional to 22,449.52, 30,980.31 and 12,378.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,449.52 : 30,980.31 = 12,378.12 : x
2. Step 2: Convert to fraction form
   22,449.52/30,980.31 = 12,378.12/x
3. Step 3: Cross multiply
   22,449.52x = 30,980.31 × 12,378.12
4. Step 4: Simplify right side
   22,449.52x = 383,477,994.82
5. Step 5: Solve for x
   x = 383,477,994.82/22,449.52
6. Step 6: Final answer
   x = 17,081.79