Finding the Fourth Proportional to 23,730.72, 32,748.72 and 13,120.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,730.72 : 32,748.72 = 13,120.12 : x
2. Step 2: Convert to fraction form
   23,730.72/32,748.72 = 13,120.12/x
3. Step 3: Cross multiply
   23,730.72x = 32,748.72 × 13,120.12
4. Step 4: Simplify right side
   23,730.72x = 429,667,136.25
5. Step 5: Solve for x
   x = 429,667,136.25/23,730.72
6. Step 6: Final answer
   x = 18,105.95