Finding the Fourth Proportional to 23,330.79, 32,196.83 and 12,720.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,330.79 : 32,196.83 = 12,720.96 : x
2. Step 2: Convert to fraction form
   23,330.79/32,196.83 = 12,720.96/x
3. Step 3: Cross multiply
   23,330.79x = 32,196.83 × 12,720.96
4. Step 4: Simplify right side
   23,330.79x = 409,574,522.95
5. Step 5: Solve for x
   x = 409,574,522.95/23,330.79
6. Step 6: Final answer
   x = 17,555.11