Finding the Fourth Proportional to 13,293.50, 19,783.31 and 12,850.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,293.50 : 19,783.31 = 12,850.56 : x
2. Step 2: Convert to fraction form
   13,293.50/19,783.31 = 12,850.56/x
3. Step 3: Cross multiply
   13,293.50x = 19,783.31 × 12,850.56
4. Step 4: Simplify right side
   13,293.50x = 254,226,547.90
5. Step 5: Solve for x
   x = 254,226,547.90/13,293.50
6. Step 6: Final answer
   x = 19,124.13