Finding the Fourth Proportional to 23,420.31, 32,320.83 and 12,809.94

Step by Step Solution

1. Step 1: Write the proportion equation
   23,420.31 : 32,320.83 = 12,809.94 : x
2. Step 2: Convert to fraction form
   23,420.31/32,320.83 = 12,809.94/x
3. Step 3: Cross multiply
   23,420.31x = 32,320.83 × 12,809.94
4. Step 4: Simplify right side
   23,420.31x = 414,027,893.05
5. Step 5: Solve for x
   x = 414,027,893.05/23,420.31
6. Step 6: Final answer
   x = 17,678.16