Finding the Fourth Proportional to 23,493.79, 32,419.56 and 13,420.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,493.79 : 32,419.56 = 13,420.81 : x
2. Step 2: Convert to fraction form
   23,493.79/32,419.56 = 13,420.81/x
3. Step 3: Cross multiply
   23,493.79x = 32,419.56 × 13,420.81
4. Step 4: Simplify right side
   23,493.79x = 435,096,755.04
5. Step 5: Solve for x
   x = 435,096,755.04/23,493.79
6. Step 6: Final answer
   x = 18,519.65