Finding the Fourth Proportional to 22,445.76, 30,976.68 and 12,374.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,445.76 : 30,976.68 = 12,374.28 : x
2. Step 2: Convert to fraction form
   22,445.76/30,976.68 = 12,374.28/x
3. Step 3: Cross multiply
   22,445.76x = 30,976.68 × 12,374.28
4. Step 4: Simplify right side
   22,445.76x = 383,314,111.79
5. Step 5: Solve for x
   x = 383,314,111.79/22,445.76
6. Step 6: Final answer
   x = 17,077.35