Finding the Fourth Proportional to 14,789.78, 22,056.39 and 12,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,789.78 : 22,056.39 = 12,612.50 : x
2. Step 2: Convert to fraction form
   14,789.78/22,056.39 = 12,612.50/x
3. Step 3: Cross multiply
   14,789.78x = 22,056.39 × 12,612.50
4. Step 4: Simplify right side
   14,789.78x = 278,186,155.81
5. Step 5: Solve for x
   x = 278,186,155.81/14,789.78
6. Step 6: Final answer
   x = 18,809.35