Finding the Fourth Proportional to 23,426.21, 32,327.91 and 12,815.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,426.21 : 32,327.91 = 12,815.72 : x
2. Step 2: Convert to fraction form
   23,426.21/32,327.91 = 12,815.72/x
3. Step 3: Cross multiply
   23,426.21x = 32,327.91 × 12,815.72
4. Step 4: Simplify right side
   23,426.21x = 414,305,402.34
5. Step 5: Solve for x
   x = 414,305,402.34/23,426.21
6. Step 6: Final answer
   x = 17,685.55