Finding the Fourth Proportional to 23,296.72, 32,150.16 and 12,686.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,296.72 : 32,150.16 = 12,686.80 : x
2. Step 2: Convert to fraction form
   23,296.72/32,150.16 = 12,686.80/x
3. Step 3: Cross multiply
   23,296.72x = 32,150.16 × 12,686.80
4. Step 4: Simplify right side
   23,296.72x = 407,882,649.89
5. Step 5: Solve for x
   x = 407,882,649.89/23,296.72
6. Step 6: Final answer
   x = 17,508.16