Finding the Fourth Proportional to 23,499.63, 32,429.21 and 12,889.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.63 : 32,429.21 = 12,889.22 : x
2. Step 2: Convert to fraction form
   23,499.63/32,429.21 = 12,889.22/x
3. Step 3: Cross multiply
   23,499.63x = 32,429.21 × 12,889.22
4. Step 4: Simplify right side
   23,499.63x = 417,986,995.52
5. Step 5: Solve for x
   x = 417,986,995.52/23,499.63
6. Step 6: Final answer
   x = 17,786.96