Finding the Fourth Proportional to 23,330.72, 32,196.54 and 12,720.53

Step by Step Solution

1. Step 1: Write the proportion equation
   23,330.72 : 32,196.54 = 12,720.53 : x
2. Step 2: Convert to fraction form
   23,330.72/32,196.54 = 12,720.53/x
3. Step 3: Cross multiply
   23,330.72x = 32,196.54 × 12,720.53
4. Step 4: Simplify right side
   23,330.72x = 409,556,891.98
5. Step 5: Solve for x
   x = 409,556,891.98/23,330.72
6. Step 6: Final answer
   x = 17,554.41