Finding the Fourth Proportional to 23,420.41, 32,320.42 and 12,809.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,420.41 : 32,320.42 = 12,809.81 : x
2. Step 2: Convert to fraction form
   23,420.41/32,320.42 = 12,809.81/x
3. Step 3: Cross multiply
   23,420.41x = 32,320.42 × 12,809.81
4. Step 4: Simplify right side
   23,420.41x = 414,018,488.10
5. Step 5: Solve for x
   x = 414,018,488.10/23,420.41
6. Step 6: Final answer
   x = 17,677.68