Finding the Fourth Proportional to 23,658.81, 32,648.05 and 13,580.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,658.81 : 32,648.05 = 13,580.16 : x
2. Step 2: Convert to fraction form
   23,658.81/32,648.05 = 13,580.16/x
3. Step 3: Cross multiply
   23,658.81x = 32,648.05 × 13,580.16
4. Step 4: Simplify right side
   23,658.81x = 443,365,742.69
5. Step 5: Solve for x
   x = 443,365,742.69/23,658.81
6. Step 6: Final answer
   x = 18,739.98