Finding the Fourth Proportional to 23,421.59, 32,322.05 and 12,811

Step by Step Solution

1. Step 1: Write the proportion equation
   23,421.59 : 32,322.05 = 12,811 : x
2. Step 2: Convert to fraction form
   23,421.59/32,322.05 = 12,811/x
3. Step 3: Cross multiply
   23,421.59x = 32,322.05 × 12,811
4. Step 4: Simplify right side
   23,421.59x = 414,077,782.55
5. Step 5: Solve for x
   x = 414,077,782.55/23,421.59
6. Step 6: Final answer
   x = 17,679.32